Editing Microsoft Outlook (section)

== Versions ==
Outlook has replaced Microsoft's previous [[Calendaring software|scheduling]] and [[email client]]s, Schedule+ and [[Microsoft Exchange Server#Clients|Exchange Client]].

''Outlook 98'' and ''Outlook 2000'' offer two configurations:
*'''Internet Mail Only''' (aka '''IMO''' mode): A lighter application mode with specific emphasis on [[Post Office Protocol|POP3]] and [[Internet Message Access Protocol|IMAP]] accounts, including a lightweight [[Internet fax|Fax application]].
*'''Corporate Work group''' (aka '''CW''' mode): A full [[MAPI]] client with specific emphasis on Microsoft Exchange accounts.

[[Software license|Perpetual]] versions of Microsoft Outlook include:

{| class="wikitable"
|-
! Name !! Version number<ref group="lower-roman">The version numbers follows the Office numbers.</ref>!! Release date<ref>{{cite web|url=http://support.microsoft.com/lifecycle/search/default.aspx?sort=PN&alpha=outlook&Filter=FilterNO|title=Microsoft Outlook Life-cycle Information|access-date=October 23, 2011|archive-date=March 1, 2013|archive-url=https://web.archive.org/web/20130301063727/http://support.microsoft.com/lifecycle/search/default.aspx?sort=PN&alpha=outlook&Filter=FilterNO|url-status=live}}</ref> !! Notes
|-
! Outlook 97
| 8.0
| January 16, 1997
| Included in [[Office 97]] and bundled with [[Microsoft Exchange Server|Exchange Server]] 5.0 and 5.5. This was a renamed and slightly upgraded version of the Microsoft Exchange client.
|-
! Outlook 98
| 8.5
| June 21, 1998
| Freely distributed with books and magazines for coping with the newest Internet standard such as [[HTML email]].<ref name=":0">{{Cite web |last=Singh |first=Rohit |date=June 3, 2021 |title=The Ultimate Guide to Convert Outlook OST to PST File |url=https://www.cigatisolutions.com/blog/convert-ost-to-pst-file/ |access-date= |website=Cigati Solutions |archive-date=January 4, 2023 |archive-url=https://web.archive.org/web/20230104185959/https://www.cigatisolutions.com/blog/convert-ost-to-pst-file/ |url-status=live }}</ref> Outlook 98 setup was based on [[Active Setup]] which also installed [[Internet Explorer 4]].<ref>{{Cite web|url=http://support.microsoft.com/kb/277552|title=OL98: How to Troubleshoot Active Setup Problems in Windows 98, 98 SE or ME|date=January 29, 2007|website=Support|archive-url=https://web.archive.org/web/20070316000058/http://support.microsoft.com/kb/277552|archive-date=March 16, 2007|access-date=June 18, 2019|edition=3.1}}</ref>
|-
! Outlook 2000
| 9.0
| June 27, 1999
| Included in [[Office 2000]] and bundled with Exchange 2000 Server.
|-
! Outlook 2002
| 10
| May 31, 2001
| Included in [[Office XP]]
|-
! Outlook 2003
| 11
| November 20, 2003
| Included in [[Office 2003]] (incl. Standard Edition for Students and Teachers) and bundled with Exchange Server 2003
|-
! Outlook 2007 
| 12
| January 27, 2007
| Included in [[Office 2007]], except Office Home and Student edition
|-
! Outlook 2010
| 14
| July 15, 2010
| Included in [[Office 2010]] Home and Business, Standard, Professional and Professional Plus
|-
! Outlook 2011 for Mac
| 14
| October 26, 2010
| Included in [[Microsoft Office for Mac 2011|Office for Mac 2011]] Home and Business
|-
! Outlook 2013
| 15
| January 29, 2013
| Included in [[Microsoft Office 2013|Office 2013]], except Home & Student edition
|-
! Outlook for Mac
| 15.3
| October 31, 2014
| Included in [[Office 365]], except some{{which|date=November 2014}} commercial editions
|-
! Outlook 2016
| 16
| September 22, 2015
| Included in [[Microsoft Office 2016|Office 2016]] and Office 365
|-
! Outlook 2016 for Mac
| 15.12
| September 25, 2015
| Included in Office 2016 and Office 365
|-
! Outlook 2019
| 16
| September 24, 2018
| Included in [[Microsoft Office 2019|Office 2019]] and Office 365
|-
! Outlook 2019 for Mac
| 16.17
| September 24, 2018
| Included in Office 2019 and Office 365
|-
! Outlook for Phones & Tablets
| 1.3
| 2015
| Included in Office 365, except some{{which|date=November 2014}} commercial editions
Includes [[iOS]] and [[Android (operating system)|Android]] support
|-
|}

=== Microsoft Outlook ===

Microsoft Outlook is an email and personal information manager software primarily used in professional settings. As part of the [[Microsoft Office|Microsoft Office suite]], it offers email management, contact storage, calendar scheduling, and task tracking. Outlook can function independently or as part of a larger Microsoft ecosystem, including integration with [[SharePoint]] for file sharing. While it stores email data locally for offline access, newer versions restrict link opening to Microsoft's own browsers.<ref>{{Cite web |url=https://www.theverge.com/2023/5/3/23709297/microsoft-edge-force-outlook-teams-web-links-open |title=Microsoft is forcing Outlook and Teams to open links in Edge, and IT admins are angry |date=May 3, 2023 |access-date=May 4, 2023 |archive-date=May 4, 2023 |archive-url=https://web.archive.org/web/20230504190044/https://www.theverge.com/2023/5/3/23709297/microsoft-edge-force-outlook-teams-web-links-open |url-status=live }}</ref><ref name=":0" />{{trivia|section|date=May 2019}}

Privacy is severely degraded in latest versions, as new Outlook sends passwords, mails and other data to Microsoft.<ref>{{Cite web |url=https://mailbox.org/en/post/warning-new-outlook-sends-passwords-mails-and-other-data-to-microsoft |title=Warning: New Outlook sends passwords, mails and other data to Microsoft |access-date=November 15, 2023 |archive-date=November 14, 2023 |archive-url=https://web.archive.org/web/20231114050933/https://mailbox.org/en/post/warning-new-outlook-sends-passwords-mails-and-other-data-to-microsoft |url-status=live }}</ref><ref>{{Cite web |url=https://www.heise.de/news/Microsoft-krallt-sich-Zugangsdaten-Achtung-vorm-neuen-Outlook-9357691.html |title=Microsoft krallt sich Zugangsdaten: Achtung vor dem neuen Outlook |date=November 9, 2023 |access-date=November 15, 2023 |archive-date=November 15, 2023 |archive-url=https://web.archive.org/web/20231115174832/https://www.heise.de/news/Microsoft-krallt-sich-Zugangsdaten-Achtung-vorm-neuen-Outlook-9357691.html |url-status=live }}</ref>

==== Outlook 2002 ====
Outlook 2002 introduced these new features:<ref name="Outlook2002ProductGuide">{{cite web |url=https://www.microsoft.com:80/office/outlook/evaluation/OutlkPG.doc |title=Microsoft Outlook 2002 Product Guide |date=May 30, 2001 |publisher=[[Microsoft]] |format=DOC |archive-url=https://web.archive.org/web/20030207192651/http://www.microsoft.com/office/outlook/evaluation/OutlkPG.doc |archive-date=February 7, 2003 |access-date=December 31, 2017 |url-status=dead }}</ref>
*[[Autocomplete]] for [[email address]]es
* Colored categories for calendar items
* Group schedules
*[[Hyperlink]] support in email subject lines
* Native support for [[Outlook.com]] (formerly Hotmail)
* Improved search functionality, including the ability to stop a search and resume it later
* [[Lunar calendar]] support
*[[MSN Messenger]] integration
* Performance improvements<ref name="Outlook2002PerformanceTuning">{{cite web |url=https://www.microsoft.com:80/office/outlook/evaluation/perform.doc |title=Microsoft Outlook 2002 Performance Tuning |date=June 7, 2001 |publisher=[[Microsoft]] |format=DOC |archive-url=https://web.archive.org/web/20031004211956/http://www.microsoft.com/office/outlook/evaluation/perform.doc |archive-date=October 4, 2003 |access-date=December 31, 2017 |url-status=dead }}</ref>
* Preview pane improvements, including the ability to: 
**open hyperlinks;
**respond to meeting requests; and 
**display email properties without opening a message
* Reminder window that consolidates all reminders for appointments and tasks in a single view
* [[Retention period|Retention policies]] for documents and email
* Security improvements, including the automatic blocking of potentially unsafe attachments and of programmatic access to information in Outlook:
** SP1 introduced the ability to view all non-[[digital signature|digitally signed]] email or [[plaintext|unencrypted]] email as [[plain text]];<ref name="Outlook2002SP1PlainText">{{cite web |url=http://support.microsoft.com:80/kb/307594 |title=OL2002: Users Can Read Nonsecure E-mail as Plain Text |publisher=[[Microsoft]] |work=Support |archive-url=https://web.archive.org/web/20041020204339/http://support.microsoft.com/kb/307594 |archive-date=October 20, 2004 |access-date=December 31, 2017 |url-status=dead }}</ref>
** SP2 allows users to—through the [[Windows Registry|Registry]]—prevent the addition of new email accounts or the creation of new [[Personal Storage Table]]s;<ref name="OfficeXPSP2OutlookCh">{{cite web |url=http://www.itprotoday.com/microsoft-exchange/office-xp-sp2-brings-changes-outlook |title=Office XP SP2 Brings Changes to Outlook |last=Mosher |first=Sue |date=August 26, 2002 |publisher=[[Penton (company)|Penton]] |work=Windows IT Pro |archive-url=https://archive.today/20180101012444/http://www.itprotoday.com/microsoft-exchange/office-xp-sp2-brings-changes-outlook |archive-date=January 1, 2018 |access-date=January 1, 2018}}</ref>
** SP3 updates the object model guard security for applications that access messages and other items.<ref name="Outlook2003SP3">{{cite web |url=http://www.itprotoday.com/microsoft-exchange/tighter-security-outlook-2002-sp3 |title=Tighter Security in Outlook 2002 SP2 |last=Mosher |first=Sue |date=March 25, 2004 |publisher=[[Penton (company)|Penton]] |work=Windows IT Pro |archive-url=https://archive.today/20180101013323/http://www.itprotoday.com/microsoft-exchange/tighter-security-outlook-2002-sp3 |archive-date=January 1, 2018 |access-date=January 1, 2018}}</ref>
* [[Smart tag (Microsoft)|Smart tag]]s when [[Microsoft Word|Word]] is configured as the default email editor. This option was available only when the versions of Outlook and Word were the same, i.e. both were 2002.

==== Outlook 2003 ====
Outlook 2003 introduced these new features:<ref name="Office2003ProductGuide">{{cite web|url=https://download.microsoft.com/download/0/f/1/0f1d5b1f-53bc-47c3-bf6f-ac6d67cf9766/office2003guide.doc |title=Microsoft Office 2003 Editions Product Guide |date=September 2003 |publisher=[[Microsoft]] |format=DOC |archive-url=https://web.archive.org/web/20051104045819/http://download.microsoft.com/download/0/f/1/0f1d5b1f-53bc-47c3-bf6f-ac6d67cf9766/Office2003Guide.doc |archive-date=November 4, 2005 |access-date=March 5, 2017 |url-status=dead }}</ref>
*[[Autocomplete]] suggestions for a single character
*[[Cache (computing)|Cached]] Exchange mode
* Colored (quick) flags
* Desktop Alert
* [[Email filtering]] to combat [[email spam|spam]]
** Images in [[HTML email|HTML mail]] are blocked by default to prevent spammers from determining whether an email address is active via [[web beacon]];<ref name="AvoidSpam">{{cite web |url=http://www.techrepublic.com:80/blog/microsoft-office/how-do-i-avoid-e-mail-spam-using-outlook-tools |title=How do I... Avoid e-mail spam using Outlook tools? |last=Harkins |first=Susan |date=April 22, 2008 |publisher=[[CBS Interactive]] |work=[[TechRepublic]] |archive-url=https://web.archive.org/web/20131224202911/http://www.techrepublic.com/blog/microsoft-office/how-do-i-avoid-e-mail-spam-using-outlook-tools |archive-date=December 24, 2013 |access-date=January 2, 2018 |url-status=dead }}</ref>
** SP1 introduced the ability to block email based on [[country code top-level domain]]s;<ref name="Office2003SP1IW">{{cite web |url=https://www.infoworld.com/article/2665648/security/you-have-nothing-to-fear-from-office-2003-sp1.html |title=You have nothing to fear from Office 2003 SP1 |last=Rist |first=Oliver |date=August 20, 2004 |publisher=[[International Data Group|IDG]] |work=[[InfoWorld]] |archive-url=https://web.archive.org/web/20171231232032/https://www.infoworld.com/article/2665648/security/you-have-nothing-to-fear-from-office-2003-sp1.html |archive-date=December 31, 2017 |access-date=December 31, 2017}}</ref>
** SP2 introduced [[phishing#Anti-phishing|anti-phishing]] functionality that automatically disables hyperlinks present in spam<ref name="Outlook2003SP2PhishingFilter">{{cite web |url=http://searchexchange.techtarget.com/tip/Microsoft-Office-2003-SP2s-antiphishing-filter-for-Outlook |title=Microsoft Office 2003 SP2's antiphishing filter for Outlook |last=Yegulalp |first=Serdar |publisher=[[TechTarget]] |work=SearchExchange |access-date=December 31, 2017 |archive-date=January 1, 2018 |archive-url=https://web.archive.org/web/20180101082418/http://searchexchange.techtarget.com/tip/Microsoft-Office-2003-SP2s-antiphishing-filter-for-Outlook |url-status=dead }}</ref>
* Expandable [[distribution list]]s
* [[Information rights management]]
* Intrinsic support for [[tablet PC]] functionality (e.g., [[handwriting recognition]])
* Reading pane
* [[Virtual folder|Search folders]]
* [[Unicode]] support

==== Outlook 2007 ====
[[File:Outlook 07.png|thumb|The main Outlook 2007 interface with its [[menu (computing)|menu]]s and [[toolbar]]s]]
[[File:Outlook2007SMS.png|thumb|right|Outlook 2007 with options for text message composition. The left-hand side depicts a preview of how the message will appear on the recipient's phone.]]
Features that debuted in Outlook 2007 include:<ref name="Outlook2007NewFeatures">{{cite web |url=http://office.microsoft.com:80/en-us/help/HA100743061033.aspx |title=What's new in Microsoft Office Outlook 2007 |publisher=[[Microsoft]] |work=Support |archive-url=https://web.archive.org/web/20100123042631/http://office.microsoft.com/en-us/help/HA100743061033.aspx |archive-date=January 23, 2010 |access-date=January 3, 2018 |url-status=dead }}</ref>
* Attachment preview, with which the contents of attachments can be previewed before opening
** Supported [[file type]]s include [[Microsoft Excel|Excel]], [[Microsoft PowerPoint|PowerPoint]], [[Microsoft Visio|Visio]], and [[Microsoft Word|Word]] files. If Outlook 2007 is installed on [[Windows Vista]], then audio and video files can be previewed. If a compatible [[list of PDF software|PDF reader]] such as [[Adobe Acrobat]] [[Adobe Acrobat version history#Acrobat|8.1]] is installed, [[PDF]] files can also be previewed.<ref name="Outlook2007vsOutlook2003">{{cite web |url=http://www.itprotoday.com/microsoft-exchange/outlook-2007-vs-outlook-2003 |title=Outlook 2007 vs. Outlook 2003 |last=Bruzzese J. |first=Peter |date=February 4, 2008 |publisher=[[Penton (company)|Penton]] |work=Windows IT Pro |archive-url=https://web.archive.org/web/20180103041458/http://www.itprotoday.com/microsoft-exchange/outlook-2007-vs-outlook-2003 |archive-date=January 3, 2018 |access-date=January 3, 2018}}</ref>
* Auto Account Setup, which allows users to enter a username and password for an email account without entering a server name, port number, or other information
* Calendar sharing improvements including the ability to export a calendar as an [[HTML]] file—for viewing by users without Outlook—and the ability to publish calendars to an external service (e.g., [[Office Web Apps]]) with an online provider (e.g., [[Microsoft account]])
* Colored categories with support for user roaming, which replace colored (quick) flags introduced in Outlook 2003<ref name="Outlook2007ModifiedFunctionality">{{cite web |url=http://office.microsoft.com:80/en-us/outlook/HA100926831033.aspx |title=Discontinued features and modified functionality in Outlook 2007 |publisher=[[Microsoft]] |work=Support |archive-url=https://web.archive.org/web/20091227234725/http://office.microsoft.com/en-us/outlook/HA100926831033.aspx |archive-date=December 27, 2009 |access-date=January 3, 2018 |url-status=dead }}</ref>
* Improved email spam filtering and anti-phishing features
**[[Postmark]] intends to reduce [[Spamming|spam]] by making it difficult and time-consuming to send it
* Information rights management improvements with [[Windows Rights Management Services]] and managed policy compliance integration with Exchange Server 2007
* [[Japanese language|Japanese]] [[Kanji#Readings|Yomi]] name support for contacts
* Multiple calendars can be overlaid with one another to assess details such as potential scheduling conflicts
* [[Ribbon (computing)|Ribbon]] (Office Fluent) interface
* Outlook Mobile Service support, which allowed multimedia and [[SMS]] [[text messaging|text message]]s to be sent directly to [[mobile phone]]s<ref name="OutlookMobileService">{{cite web |url=https://blogs.msdn.microsoft.com/deva/2008/04/09/outlook-mobile-service-how-it-works-advantages-features/ |title=Outlook Mobile Service - How it works? Advantages? Features? |date=April 9, 2008 |publisher=[[Microsoft]] |work=[[Microsoft Developer Network|MSDN]] |archive-url=https://web.archive.org/web/20180102234027/https://blogs.msdn.microsoft.com/deva/2008/04/09/outlook-mobile-service-how-it-works-advantages-features/ |archive-date=January 2, 2018 |access-date=January 3, 2018}}</ref>
* [[Incremental search|Instant search]] through [[Windows Search]], an [[search engine indexing|index]]-based [[desktop search]] platform
** Instant search functionality is also available in Outlook 2002 and Outlook 2003 if these versions are installed alongside Windows Search<ref name="WindowsDesktopSearchOutlook">{{cite web |url=http://searchexchange.techtarget.com/tutorial/How-Windows-Desktop-Search-works-in-Microsoft-Outlook-2007 |title=How Windows Desktop Search works in Microsoft Outlook 2007 |last=Posey |first=Brian |date=April 21, 2009 |publisher=[[TechTarget]] |work=SearchExchange |archive-url=https://web.archive.org/web/20100927034333/http://searchexchange.techtarget.com/tutorial/How-Windows-Desktop-Search-works-in-Microsoft-Outlook-2007 |archive-date=September 27, 2010 |access-date=January 3, 2017 |url-status=dead }}</ref>
* Integrated [[RSS]] aggregation
* Support for [[Windows SideShow]] with the introduction of a calendar [[Microsoft Gadgets#Device gadgets and Windows Sideshow|gadget]]<ref name="Outlook2007Platform">{{cite web |url=https://msdn.microsoft.com/en-us/library/cc513842(v=office.12).aspx |title=Chapter 2: Outlook as a Platform |last2=Gregg |first2=Ryan |last1=Byrne |first1=Randy |date=2007 |publisher=[[Microsoft]] |work=[[Microsoft Developer Network|MSDN]] |archive-url=https://web.archive.org/web/20180103054335/https://msdn.microsoft.com/en-us/library/cc513842(v=office.12).aspx |archive-date=January 3, 2018 |access-date=January 3, 2018}}</ref>
*[[Time management|To-Do]] Bar that consolidates calendar information, flagged email, and tasks from [[Microsoft OneNote|OneNote]] 2007, Outlook 2007, [[Microsoft Project|Project]] 2007, and [[SharePoint|Windows SharePoint Services]] 3.0 [[website]]s within a central location.
* The ability to export items as PDF or [[Open XML Paper Specification|XPS]] files
* [[Unified messaging]] support with Exchange Server 2007, including features such as [[Missed call|missed-call]] notifications, and [[voicemail]] with voicemail preview and [[Windows Media Player]]<ref name="Outlook2007Platform"/>
* Word 2007 replaces [[Internet Explorer]] as the default viewer for [[HTML email]],<ref name="Outlook2007ModifiedFunctionality"/> and becomes the default email editor in this and all subsequent versions.

==== Outlook 2010 ====
[[File:Outlook 2010 box.jpg|thumb|Outlook 2010 in a retail box]]
Features that debuted in Outlook 2010 include:<ref name="Outlook2010NewFeatures">{{cite web |url=https://support.office.com/en-us/article/What-s-new-in-Microsoft-Outlook-2010-18c53bbe-8280-4fdd-b3f1-198adc57fc86 |title=What's new in Microsoft Outlook 2010 |publisher=[[Microsoft]] |work=Support |archive-url=https://web.archive.org/web/20160311132543/https://support.office.com/en-us/article/What-s-new-in-Microsoft-Outlook-2010-18c53bbe-8280-4fdd-b3f1-198adc57fc86 |archive-date=March 11, 2016 |access-date=January 3, 2017 |url-status=dead }}</ref>
* Additional [[command-line interface|command-line]] switches
* An improved conversation view that groups messages based on different criteria regardless of originating folders
*[[Internet Message Access Protocol|IMAP]] messages are sent to the Deleted Items folder, eliminating the need to mark messages for future deletion
* Notification when an email is about to be sent without a subject
* Quick Steps, individual collections of commands that allow users to perform multiple actions simultaneously
*[[Ribbon (computing)|Ribbon]] interface in all views
* Search Tools contextual tab on the ribbon that appears when performing searches and that includes basic or advanced criteria filters
* Social Connector to connect to various [[social network]]s and aggregate appointments, contacts, communication history, and file attachments
* Spell check-in additional areas of the user interface
* Support for multiple Exchange accounts in a single Outlook profile
* The ability to schedule a meeting with a contact by replying to an email message
* To-Do Bar enhancements including visual indicators for conflicts and unanswered meeting requests
*[[Voicemail]] transcripts for [[Unified messaging|Unified Messaging]] communications
* [[Zooming user interface]] for calendar and mail views

==== Outlook 2013 ====
Features that debuted in Outlook 2013, which was released on January 29, 2013, include:
*[[Email attachment|Attachment]] reminder
*[[Exchange ActiveSync]] (EAS)
* Add-in resiliency
*[[Cache (computing)|Cached]] Exchange mode improvements
*[[Internet Message Access Protocol|IMAP]] improvements
* Outlook [[data file]] ([[Personal Storage Table|.ost]]) [[Data compression|compression]]
* People hub
* Startup performance improvements

==== Outlook 2016 ====
Features that debuted in Outlook 2016, include:<ref>{{cite web|url=https://support.office.com/en-us/article/What-s-new-in-Outlook-2016-for-Windows-51c81e7a-de25-4a34-a7fe-bd79f8e48647?ui=en-US&rs=en-US&ad=US|title=What's new in Outlook 2016 for Windows|date=June 30, 2023|access-date=November 19, 2015|archive-date=April 15, 2017|archive-url=https://web.archive.org/web/20170415235011/https://support.office.com/en-us/article/What-s-new-in-Outlook-2016-for-Windows-51c81e7a-de25-4a34-a7fe-bd79f8e48647?ui=en-US&rs=en-US&ad=US|url-status=live}}</ref>
*[[Email attachment|Attachment]] link to [[Cloud computing|cloud resource]]
* Groups redesign
* Search cloud
* Clutter folder
*[[Email address internationalization|Email Address Internationalization]]
*[[Scalable Vector Graphics]]

==== Outlook 2019 ====
Features that debuted in Outlook 2019, include:<ref>{{cite web|url=https://support.office.com/en-us/article/what-s-new-in-outlook-2019-for-windows-0c64df36-0908-4ff6-a7fc-573a62800525|title=What's new in Outlook 2019|access-date=April 22, 2020|archive-date=November 12, 2020|archive-url=https://web.archive.org/web/20201112022940/https://support.microsoft.com/en-us/office/what-s-new-in-outlook-2019-for-windows-0c64df36-0908-4ff6-a7fc-573a62800525?ui=en-us&rs=en-us&ad=us|url-status=live}}</ref>
* Focused Inbox
* Add multiple [[time zone]]s
* Listen to your emails
* Easier email sorting
* Automatic download of [[Microsoft OneDrive|cloud attachments]]
* True Dark Mode (version 1907 onward)

=== Macintosh ===
[[File:Outlook for macOS with new UI.png|thumb|Outlook for Mac with the new UI applied]]
Microsoft made several versions of Outlook for older Mac computers, but only for email accounts on specific company servers ([[Microsoft Exchange Server|Exchange]]). It wasn't part of the regular Microsoft Office package for Mac.

[[Microsoft Entourage]] was Microsoft's email app for Mac. It was similar to Outlook but didn't work well with Exchange email at first. Over time, it got better at handling Exchange, but it was always a different program than Outlook.

[[File:Microsoft Outlook 2011.png|thumb|Microsoft Outlook for Mac 2011]]
Entourage was replaced by Outlook for Mac 2011, which features greater compatibility and parity with Outlook for Windows than Entourage offered. It is the first native version of Outlook for [[MacOS]].

Outlook 2011 initially supported Mac OS X's [[iSync|Sync Services]] only for contacts, not events, tasks or notes. It also does not have a Project Manager equivalent to that in Entourage.<ref>{{cite web | url=https://www.macworld.com/reviews/product/671493/review/outlook_for_mac_2011.html | title=Microsoft Outlook for Mac 2011 | last=Welsh | first=John C. | work=[[Macworld]] | publisher=[[International Data Group|IDG]] | date=October 1, 2010 | access-date=November 7, 2010 | archive-date=August 15, 2016 | archive-url=https://web.archive.org/web/20160815102237/http://www.macworld.com/article/1154484/web-apps/outlook2011mac.html | url-status=dead }}</ref> With [[Service pack|Service Pack]] 1 (v 14.1.0), published on April 12, 2011, Outlook can now sync calendar, notes and tasks with Exchange 2007 and Exchange 2010.

On October 31, 2014, [[Microsoft]] released Outlook for Mac (v15.3 build 141024) with [[Office 365]] (a [[software as a service]] licensing program that makes Office programs available as soon as they are developed). Outlook for Mac 15.3 improves upon its predecessors with:<ref name="outlook-for-mac-15.3" />
* Better performance and reliability as a result of a new threading model and database improvements.
* A new modern user interface with improved scrolling and agility when switching between Ribbon tabs.
* Online archive support for searching Exchange (online or on-premises) archived mail.
* Master Category List support and enhancements delivering access to category lists (name and color) and sync between Mac, Microsoft Windows and OWA clients.
* Office 365 push email support for real-time email delivery.
* Faster first-run and email download experience with improved Exchange Web Services syncing.<ref name="outlook-for-mac-15.3">{{cite web | url=http://blogs.office.com/2014/10/31/new-outlook-mac-available-office-365-customers/ | title=New Outlook for Mac available to Office 365 | work=Office Blogs | date=October 31, 2014 | publisher=[[Microsoft]] | access-date=November 1, 2014 | archive-date=November 3, 2014 | archive-url=https://web.archive.org/web/20141103044646/http://blogs.office.com/2014/10/31/new-outlook-mac-available-office-365-customers/ | url-status=live }}</ref>
The [https://support.microsoft.com/en-us/office/the-new-outlook-for-mac-6283be54-e74d-434e-babb-b70cefc77439 "New Outlook for Mac" client], included with version 16.42 and above, became available for "Early Insider" testers in the fall of 2019, with a public "Insider" debut in October 2020.<ref>{{Cite web|last=TimDavenport|title=Release notes for Office for Mac - Office release notes|url=https://docs.microsoft.com/en-us/officeupdates/release-notes-office-for-mac|access-date=April 13, 2021|website=docs.microsoft.com|language=en-us|archive-date=April 16, 2021|archive-url=https://web.archive.org/web/20210416202046/https://docs.microsoft.com/en-us/officeupdates/release-notes-office-for-mac|url-status=live}}</ref><ref>{{Cite web|last=Warren|first=Tom|date=September 22, 2020|title=Microsoft's new Outlook for Mac design launches in October|url=https://www.theverge.com/2020/9/22/21448985/microsoft-outlook-for-mac-new-design-october-release|access-date=April 13, 2021|website=The Verge|language=en|archive-date=April 30, 2021|archive-url=https://web.archive.org/web/20210430100622/https://www.theverge.com/2020/9/22/21448985/microsoft-outlook-for-mac-new-design-october-release|url-status=live}}</ref> It requires macOS 10.14 or greater and introduces a redesigned interface with significantly changed internals, including native search within the client that no longer depends on macOS [[Spotlight (software)|Spotlight]].<ref>{{Cite web|date=September 18, 2020|title=The new Outlook for Mac - Under the Hood|url=https://techcommunity.microsoft.com/t5/video-hub/the-new-outlook-for-mac-under-the-hood/m-p/1681528#M122|access-date=April 13, 2021|website=TECHCOMMUNITY.MICROSOFT.COM|language=en|archive-date=April 13, 2021|archive-url=https://web.archive.org/web/20210413183208/https://techcommunity.microsoft.com/t5/video-hub/the-new-outlook-for-mac-under-the-hood/m-p/1681528#M122|url-status=live}}</ref> Some Outlook features are still missing from the New Outlook client as it continues in development.<ref>{{Cite web|title=The new Outlook for Mac|url=https://support.microsoft.com/en-us/office/the-new-outlook-for-mac-6283be54-e74d-434e-babb-b70cefc77439|access-date=April 13, 2021|website=support.microsoft.com|language=en-US|archive-date=January 22, 2021|archive-url=https://web.archive.org/web/20210122005236/https://support.microsoft.com/en-us/office/the-new-outlook-for-mac-6283be54-e74d-434e-babb-b70cefc77439|url-status=live}}</ref>

To date, the Macintosh client has never had the capability of syncing Contact Groups/Personal Distribution Lists from Exchange, Microsoft 365 or Outlook.com accounts, something that the Windows and web clients have always supported.<ref>{{Cite web|title=Sync basics - what you can and cannot sync|url=https://support.microsoft.com/en-us/office/sync-basics-what-you-can-and-cannot-sync-5537d587-4930-4ac2-b044-3568509b1294|access-date=April 13, 2021|website=support.microsoft.com|language=en-US|archive-date=April 13, 2021|archive-url=https://web.archive.org/web/20210413181700/https://support.microsoft.com/en-us/office/sync-basics-what-you-can-and-cannot-sync-5537d587-4930-4ac2-b044-3568509b1294|url-status=live}}</ref> A UserVoice post created in December 2019 suggesting that the missing functionality be added has shown a "Planned" tag since October 2020.<ref>{{Cite web|last=Roy|first=Thomas|title=Support for contact lists (not contact groups!)|url=https://outlook.uservoice.com/forums/924856-the-new-outlook-for-mac/suggestions/39205405-support-for-contact-lists-not-contact-groups|access-date=April 13, 2021|website=Got an idea?|language=en|archive-date=April 13, 2021|archive-url=https://web.archive.org/web/20210413181701/https://outlook.uservoice.com/forums/924856-the-new-outlook-for-mac/suggestions/39205405-support-for-contact-lists-not-contact-groups|url-status=dead}}</ref>

In March 2023, Microsoft announced that Outlook for Mac will be available for free. This means that users no longer need a Microsoft 365 subscription or an Office licence to use the program.<ref>{{Cite web |last=Warren |first=Tom |date=March 6, 2023 |title=Microsoft makes Outlook for Mac free to use |url=https://www.theverge.com/2023/3/6/23626922/microsoft-outlook-mac-free-app |access-date=March 7, 2023 |website=The Verge |language=en-US |archive-date=March 6, 2023 |archive-url=https://web.archive.org/web/20230306234404/https://www.theverge.com/2023/3/6/23626922/microsoft-outlook-mac-free-app |url-status=live }}</ref>

=== Phones and tablets ===
First released in April 2014 by the [[venture capital]]-backed [[startup company|startup]] [[Acompli]], the company was acquired by [[Microsoft]] in December 2014. On January 29, 2015, Acompli was re-branded as Outlook Mobile—sharing its name with the Microsoft Outlook desktop [[personal information manager]] and [[Outlook.com]] email service.<ref name=verge-outlookmobile>{{cite web|title=Microsoft rebrands Acompli as Outlook for iOS and Android|url=https://www.theverge.com/2015/1/29/7936081/microsoft-outlook-app-ios-android-features|website=The Verge|date=January 29, 2015|access-date=January 31, 2015|archive-date=January 16, 2021|archive-url=https://web.archive.org/web/20210116125247/https://www.theverge.com/2015/1/29/7936081/microsoft-outlook-app-ios-android-features|url-status=live}}</ref> In January 2015, [[Microsoft]] released Outlook for phones and for tablets (v1.3 build) with [[Office 365]].<ref>Compare:
{{cite web
 | url= http://blogs.microsoft.com/blog/2015/01/29/office-everywhere-great-news-office-ios-android/
 | title= Office on iOS and Android
 | work= Office Blogs
 | date= January 29, 2015
 | publisher= [[Microsoft]]
 | access-date= January 11, 2015
 | archive-date= January 29, 2015
 | archive-url= https://web.archive.org/web/20150129170220/http://blogs.microsoft.com/blog/2015/01/29/office-everywhere-great-news-office-ios-android/
 | url-status= live
 }}</ref> This was the first Outlook for these platforms with email, calendar, and contacts.

On February 4, 2015, Microsoft acquired [[Sunrise Calendar]];<ref name=PCWorld>{{cite web|last=Miners|first=Zach|title=Microsoft reportedly buying slick calendar app Sunrise to bolster productivity push|url=http://www.pcworld.com/article/2880272/microsoft-said-to-acquire-calendar-app-sunrise-for-north-of-100-million.html|newspaper=[[PC World]]|date=February 4, 2015|access-date=April 13, 2020|archive-date=September 30, 2020|archive-url=https://web.archive.org/web/20200930200912/https://www.pcworld.com/article/2880272/microsoft-said-to-acquire-calendar-app-sunrise-for-north-of-100-million.html|url-status=live}}</ref> on September 13, 2016, Sunrise ceased to operate, and an update was released to Outlook Mobile that contained enhancements to its calendar functions.<ref>{{cite web|last=Warren|first=Tom|title=Microsoft isn't killing the Sunrise calendar app just yet|url=https://www.theverge.com/2016/9/1/12746910/microsoft-sunrise-shut-down-delayed|website=[[The Verge]]|date=September 1, 2016|access-date=April 13, 2020|archive-date=November 8, 2020|archive-url=https://web.archive.org/web/20201108123022/http://www.theverge.com/2016/9/1/12746910/microsoft-sunrise-shut-down-delayed|url-status=live}}</ref><ref name="verge-sunrisedelay">{{cite web|title=Microsoft Outlook's mobile app just added Sunrise's best features|url=https://www.theverge.com/2016/9/13/12895358/microsoft-outlook-sunrise-app-merger|website=The Verge|date=September 13, 2016|publisher=Vox Media|access-date=September 15, 2016|archive-date=November 8, 2020|archive-url=https://web.archive.org/web/20201108095451/https://www.theverge.com/2016/9/13/12895358/microsoft-outlook-sunrise-app-merger|url-status=live}}</ref>

Similar to its desktop counterpart, Outlook mobile offers an aggregation of attachments and files stored on [[cloud storage]] platforms; a "focused inbox" highlights messages from frequent contacts, and calendar events, files, and locations can be embedded in messages without switching apps. The app supports a number of email platforms and services, including [[Outlook.com]], [[Microsoft Exchange Server|Microsoft Exchange]] and [[Google Workspace]] (formerly G Suite) among others.

Outlook mobile is designed to consolidate functionality that would normally be found in separate apps on mobile devices, similar to [[personal information manager]]s on [[personal computer]]s. It is designed around four "hubs" for different tasks, including "Mail", "Calendar," "Files" and "People". The "People" hub lists frequently and recently used contacts and aggregates recent communications with them, and the "Files" hub aggregates recent attachments from messages, and can also integrate with other online storage services such as [[Dropbox]], [[Google Drive]], and [[OneDrive]].<ref name=verge-acompliandroid>{{cite web|title=Acompli brings its Exchange-friendly email app to Android|url=https://www.theverge.com/2014/9/4/6099341/acompli-brings-its-exchange-friendly-email-app-to-android|website=The Verge|date=September 4, 2014|publisher=Vox Media|access-date=January 31, 2015|archive-date=November 11, 2020|archive-url=https://web.archive.org/web/20201111175719/http://www.theverge.com/2014/9/4/6099341/acompli-brings-its-exchange-friendly-email-app-to-android|url-status=live}}</ref><ref>{{cite web|url=http://recode.net/2014/02/20/acompli-from-zimbra-and-vmware-vets-tees-up-a-swing-at-mobile-email/|title=Acompli, From Zimbra and VMware Vets, Tees Up a Swing at Mobile Email|last=Gannes|first=Liz|date=February 20, 2014|work=[[Re/code]]|access-date=September 29, 2014|archive-date=March 14, 2016|archive-url=https://web.archive.org/web/20160314082445/https://recode.net/2014/02/20/acompli-from-zimbra-and-vmware-vets-tees-up-a-swing-at-mobile-email/|url-status=live}}</ref><ref name="engadget-acompli"/><ref>{{cite web|url=http://mashable.com/2014/04/24/acompli-email-app/|title=Acompli Launches App to Simplify Mobile Email|last=Bell|first=Karissa|work=[[Mashable]]|date=April 24, 2014|access-date=January 30, 2015|archive-date=November 12, 2020|archive-url=https://web.archive.org/web/20201112030417/https://mashable.com/2014/04/24/acompli-email-app/?europe=true|url-status=live}}</ref><ref name="wsj-acompli">{{cite web|url=https://online.wsj.com/news/articles/SB10001424052702304393704579530332026112164?KEYWORDS=Joanna+Stern&mg=reno64-wsj|title=You're Emailing Wrong: The Best Mobile Apps for Managing Your Inbox|last=Stern|first=Joanna|date=April 29, 2014|publisher=[[The Wall Street Journal]]|access-date=September 29, 2014|archive-date=October 8, 2020|archive-url=https://web.archive.org/web/20201008222519/https://www.wsj.com/articles/SB10001424052702304393704579530332026112164|url-status=live}}</ref> To facilitate indexing of content for search and other features, emails and other information are stored on external servers.<ref name=witpro-outlooksecurity>{{cite web|last1=Redmond|first1=Tony|title=Do the ex-Acompli now Outlook clients really compromise security or is everyone overreacting?|url=http://windowsitpro.com/blog/do-ex-acompli-now-outlook-clients-really-compromise-security-or-everyone-overreacting|website=Windows IT Pro|publisher=Penton|access-date=January 31, 2015|archive-date=September 1, 2016|archive-url=https://web.archive.org/web/20160901100626/http://windowsitpro.com/blog/do-ex-acompli-now-outlook-clients-really-compromise-security-or-everyone-overreacting|url-status=live}}</ref>

Outlook mobile supports a large number of different e-mail services and platforms, including [[Microsoft Exchange Server|Exchange]], [[iCloud]], [[Gmail]], [[Google Workspace]] (formerly G Suite), [[Outlook.com]], and [[Yahoo! Mail]].<ref>{{cite web|url=http://www.digitalspy.com/tech/news/a567986/best-new-mobile-apps-for-ios-android-ifttt-midrive-more.html#~oRcNVU2vVxDLXK|title=Best new mobile apps for iOS, Android: IFTTT, miDrive, more|last=Langshaw|first=Mark|date=April 30, 2014|publisher=[[Digital Spy]]|access-date=September 29, 2014|archive-date=April 13, 2020|archive-url=https://web.archive.org/web/20200413014420/https://www.digitalspy.com/tech/apps/a567986/best-new-mobile-apps-for-ios-android-ifttt-midrive-more/#~oRcNVU2vVxDLXK|url-status=live}}</ref><ref>{{cite web|url=https://www.theguardian.com/technology/2014/apr/28/best-iphone-ipad-apps-tynker-acompli|title=20 best iPhone and iPad apps this week|last=Dredge|first=Stuart|date=April 28, 2014|work=[[The Guardian]]|access-date=September 29, 2014|archive-date=July 24, 2020|archive-url=https://web.archive.org/web/20200724230302/https://www.theguardian.com/technology/2014/apr/28/best-iphone-ipad-apps-tynker-acompli|url-status=live}}</ref> The app supports multiple email accounts at once.<ref name=zdnet-iosreview>{{cite web|last1=Kendrick|first1=James|title=Acompli for iOS review: Must-have app for BYOD|url=https://www.zdnet.com/article/acompli-for-ios-review-must-have-app-for-byod/|website=ZDNet|publisher=CBS Interactive|access-date=January 31, 2015|archive-date=August 8, 2020|archive-url=https://web.archive.org/web/20200808180954/https://www.zdnet.com/article/acompli-for-ios-review-must-have-app-for-byod/|url-status=live}}</ref>

Emails are divided into two inboxes: the "Focused" inbox displays messages of high importance, and those from frequent contacts. All other messages are displayed within an "Other" section.<ref name=witpro-outlooksecurity/><ref name=cnet-betterapps>{{cite web|title=Better email apps for your iPhone|url=https://www.cnet.com/news/email-apps-for-your-iphone-ipad/|website=CNET|publisher=CBS Interactive|access-date=January 31, 2015|archive-date=October 8, 2020|archive-url=https://web.archive.org/web/20201008222519/https://www.cnet.com/news/email-apps-for-your-iphone-ipad/|url-status=live}}</ref> Files, locations, and calendar events can be embedded into email messages. Swiping gestures can be used for deleting messages.<ref name="engadget-acompli">{{cite web|url=https://www.engadget.com/2014/05/03/irl-acompli/|title=Test-driving Acompli: Could an email app be reason enough to go back to the iPhone?|last=Bowen|first=Andy|date=May 3, 2014|work=[[Engadget]]|access-date=September 28, 2014|archive-date=July 26, 2020|archive-url=https://web.archive.org/web/20200726155407/https://www.engadget.com/2014-05-03-irl-acompli.html|url-status=live}}</ref><ref name=Vogel2014>{{cite web|url=http://www.itproportal.com/2014/09/15/mobile-app-of-the-day-acompli/|title=Mobile app of the day: Acompli|last=Vogel|first=Sandra|work=ITProPortal |date=September 15, 2014|access-date=September 28, 2014|archive-date=July 26, 2020|archive-url=https://web.archive.org/web/20200726154822/https://www.itproportal.com/2014/09/15/mobile-app-of-the-day-acompli/|url-status=live}}</ref><ref>{{cite web|url=http://www.phonearena.com/news/Accompli-arrives-for-Android-intelligent-email-wrapped-in-calendar-and-cloud-storage_id60636|title=Accompli arrives for Android: intelligent email wrapped in calendar and cloud storage|last=P.|first=Daniel|date=September 12, 2014|publisher=PhoneArena|access-date=September 28, 2014|archive-date=September 27, 2020|archive-url=https://web.archive.org/web/20200927001238/https://www.phonearena.com/news/Accompli-arrives-for-Android-intelligent-email-wrapped-in-calendar-and-cloud-storage_id60636|url-status=live}}</ref><ref>{{cite web|url=https://thenextweb.com/apps/2014/04/27/perfect-ios-email-app-finally-exists-much-just-email/|title=Acompli: a Perfect iOS Email App but We Wish it Wasn't Free|last=Williams|first=Owen|date=April 27, 2014|work=The Next Web|access-date=September 29, 2014|archive-date=November 28, 2020|archive-url=https://web.archive.org/web/20201128200518/https://thenextweb.com/apps/2014/04/27/perfect-ios-email-app-finally-exists-much-just-email/|url-status=live}}</ref>

Like the desktop Outlook, Outlook mobile allows users to see appointment details, respond to Exchange meeting invites, and schedule meetings. It also incorporates the three-day view and "Interesting Calendars" features from Sunrise.<ref>{{Cite web|date=September 13, 2016|title=Introducing Outlook's new and improved calendar on iOS and Android|url=https://www.microsoft.com/en-us/microsoft-365/blog/2016/09/13/introducing-outlooks-new-and-improved-calendar-on-ios-and-android/|access-date=March 26, 2021|website=Microsoft 365 Blog|language=en-US|archive-date=April 21, 2021|archive-url=https://web.archive.org/web/20210421073412/https://www.microsoft.com/en-us/microsoft-365/blog/2016/09/13/introducing-outlooks-new-and-improved-calendar-on-ios-and-android/|url-status=live}}</ref>

Files in the Files tab are not stored offline; they require Internet access to view.

==== Security ====
{{Update section|date=October 2022|reason=Data is secured with TLS version 1.2 over HTTPS connections end-to-end, between Microsoft 365 or Office 365 and the app, as per https://learn.microsoft.com/en-us/exchange/clients-and-mobile-in-exchange-online/outlook-for-ios-and-android/outlook-for-ios-and-android
|inaccurate=yes}}
Outlook mobile temporarily stores and indexes user data (including email, attachments, calendar information, and contacts), along with login credentials,<ref name=oauth-office-365>{{cite web|title=New access and security controls for Outlook for iOS and Android|url=https://blogs.office.com/2015/06/10/new-access-and-security-controls-for-outlook-for-ios-and-android|website=Office Blogs|date=June 10, 2015|access-date=June 10, 2015|archive-date=July 20, 2020|archive-url=https://web.archive.org/web/20200720105033/https://www.microsoft.com/de-de/microsoft-365/blog/2015/06/10/new-access-and-security-controls-for-outlook-for-ios-and-android/|url-status=dead}}</ref> in a "secure" form on [[Microsoft Azure]] servers located in the United States.<ref name=outlook_ios>{{cite web|title=Outlook for iOS and Android|url=https://technet.microsoft.com/EN-US/library/mt465744(v=exchg.150)|website=Microsoft TechNet|access-date=January 11, 2016|archive-date=April 13, 2020|archive-url=https://web.archive.org/web/20200413014426/https://docs.microsoft.com/en-us/exchange/clients/outlook-for-ios-and-android/use-basic-auth?view=exchserver-2019|url-status=live}}</ref> On Exchange accounts, these servers identify as a single [[Exchange ActiveSync]] user in order to fetch e-mail. Additionally, the app does not support [[mobile device management]], nor allows administrators to control how third-party [[cloud storage service]]s are used with the app to interact with their users. Concerns surrounding these security issues have prompted some firms, including the [[European Parliament]], to block the app on their Exchange servers.<ref name=networkworld-outlookapp>{{cite web|title=Outlook for iOS, Android flagged for inherent security flaws|url=https://www.networkworld.com/article/935186/outlook-for-ios-android-flagged-for-inherent-security-flaws.html|website=NetworkWorld|date=February 2, 2015|access-date=February 7, 2015|archive-date=April 28, 2024|archive-url=https://web.archive.org/web/20240428135719/https://www.networkworld.com/article/935186/outlook-for-ios-android-flagged-for-inherent-security-flaws.html|url-status=live}}</ref><ref name=techtarget-outlooksecurity>{{cite web|title=Security issues lead IT to block Outlook for iOS|url=http://searchconsumerization.techtarget.com/news/2240239514/Security-issues-lead-IT-to-block-Outlook-for-iOS|website=TechTarget|access-date=February 7, 2015|archive-date=September 21, 2020|archive-url=https://web.archive.org/web/20200921082311/https://searchmobilecomputing.techtarget.com/news/2240239514/Security-issues-lead-IT-to-block-Outlook-for-iOS|url-status=dead}}</ref><ref name=itworld-eublock>{{cite web|title=EU Parliament blocks new Outlook apps over privacy concerns|url=http://www.itworld.com/article/2881635/eu-parliament-blocks-new-outlook-apps-over-privacy-concerns.html|website=IT World|date=February 9, 2015|access-date=February 10, 2015|archive-date=April 24, 2017|archive-url=https://web.archive.org/web/20170424135557/http://www.itworld.com/article/2881635/eu-parliament-blocks-new-outlook-apps-over-privacy-concerns.html|url-status=dead}}</ref> Microsoft maintains a separate, pre-existing [[Outlook Web Access]] app for Android and iOS.<ref name=itworld-eublock/>

==== Outlook Groups ====
Outlook Groups was a mobile application for [[Windows Phone]], [[Windows 10 Mobile]], [[Android (operating system)|Android]] and [[iOS]] that could be used with an Office 365 domain Microsoft Account, e.g. a work or school account. It is designed to take existing email threads and turn them into a group-style conversation. The app lets users create groups, mention their contacts, share Office documents via OneDrive and work on them together, and participate in an email conversation. The app also allows the finding and joining of other Outlook Groups. It was tested internally at Microsoft and launched September 18, 2015, for Windows Phone 8.1 and Windows 10 Mobile users.<ref>{{cite web|url=http://www.windowscentral.com/outlook-groups-app-now-available-windows-10-mobile|title=Outlook Groups app is now available for Windows 10 Mobile and Windows Phone 8.1|work=Windows Central|date=September 19, 2015|access-date=October 2, 2015|archive-date=June 29, 2016|archive-url=https://web.archive.org/web/20160629064836/http://www.windowscentral.com/outlook-groups-app-now-available-windows-10-mobile|url-status=live}}</ref>

After its initial launch on Microsoft's own platforms they launched the application for [[Android (operating system)|Android]] and [[iOS]] on September 23, 2015.<ref name=Outlook-Groups-for-Android-launch>{{cite news|last=Edmonds|first=Rich|title=Microsoft releases Outlook Groups for Android to help you engage with your team.|url=http://www.androidcentral.com/microsoft-releases-outlook-groups-android-help-you-engage-your-team|newspaper=Android Central|date=September 23, 2015|access-date=September 23, 2015|archive-url=https://web.archive.org/web/20161117104933/http://www.androidcentral.com/microsoft-releases-outlook-groups-android-help-you-engage-your-team|archive-date=November 17, 2016|url-status=dead}}</ref>

Outlook Groups was updated on September 30, 2015, that introduced a deep linking feature as well as fixing a bug that blocked the "send" button from working.{{Citation needed|date=June 2024}} In March 2016 Microsoft added the ability to attach multiple images, and the most recently used document to group messages as well as the option to delete conversations within the application programme.<ref>{{cite web|url=http://mspoweruser.com/outlook-groups-ios-updated-new-features/|title=Outlook Groups for iOS updated with new features.|work=MSPowerUser|date=March 29, 2016|first=Michael|last=Allison|access-date=May 5, 2020|archive-date=September 20, 2020|archive-url=https://web.archive.org/web/20200920121510/https://mspoweruser.com/outlook-groups-ios-updated-new-features/|url-status=live}}</ref>

Outlook Groups was retired by Microsoft on May 1, 2018.<ref>{{cite web|title=Outlook Groups app is retiring.|url=https://support.office.com/en-us/article/outlook-groups-app-is-retiring-17ef4874-8b2a-4176-8c7e-998997c68334|access-date=May 5, 2020|archive-date=August 10, 2020|archive-url=https://web.archive.org/web/20200810041258/https://support.microsoft.com/en-us/office/outlook-groups-app-is-retiring-17ef4874-8b2a-4176-8c7e-998997c68334?ui=en-us&rs=en-us&ad=us|url-status=live}}</ref> The functionality was replaced by adding the "Groups node" to the folder list within the Outlook mobile app.<ref>{{cite web |title=Use Groups in the Outlook mobile app |url=https://support.office.com/en-us/article/use-groups-in-the-outlook-mobile-app-7804076e-0acc-48f6-87a1-083b98a5ffa2 |access-date=May 5, 2020 |archive-date=November 12, 2020 |archive-url=https://web.archive.org/web/20201112003907/https://support.microsoft.com/en-us/office/use-groups-in-the-outlook-mobile-app-7804076e-0acc-48f6-87a1-083b98a5ffa2?ui=en-us&rs=en-us&ad=us |url-status=live }}</ref>