Editing SMS (section)

=== Application-to-person (A2P) SMS ===
While SMS reached its popularity as a person-to-person messaging, another type of SMS is growing fast: application-to-person (A2P) messaging. A2P is a type of SMS sent from a subscriber to an application or sent from an application to a subscriber. It is commonly used by businesses, such as banks, e-gaming, logistic companies, e-commerce, to send SMS messages from their systems to their customers.<ref>{{Cite web|url=https://www.infobip.com/en/glossary/a2p-application-to-person-sms-messaging|title=What is A2P (Application-to-person) SMS Messaging? {{!}} Glossary|website=www.infobip.com|access-date=April 13, 2019|archive-date=January 25, 2017|archive-url=https://web.archive.org/web/20170125115455/http://www.infobip.com/en/glossary/a2p-application-to-person-sms-messaging|url-status=live}}</ref>

In the US, carriers have traditionally preferred that A2P messages be sent using a short code rather than a standard [[long code]].<ref>{{cite web|url=https://www.sinch.com/learn/what-is-a-short-code/|title=What is a Short Code?|access-date=September 23, 2015|archive-date=March 7, 2016|archive-url=https://web.archive.org/web/20160307140121/https://www.sinch.com/learn/what-is-a-short-code/|url-status=deviated}}</ref> In 2021, US carriers introduced a new service called A2P 10DLC, supporting the used of 10-digit long codes for A2P messages.<ref>{{cite web|url=https://smartercontact.com/what-is-10dlc/|title=What is A2P 10DLC and How It Impacts Your Business|date=29 December 2021 }}</ref><ref>{{cite web|url=https://www.twilio.com/en-us/blog/what-you-should-know-about-verizons-a2p-10dlc-service|title=What you should know about Verizon's A2P 10DLC Service|website=Twilio}}</ref><ref>{{cite web |title=10DLC Registration: SMS Campaign Approval and Compliance Guide |url=https://www.sent.dm/resources/10dlc-sms-registration |access-date=2024-10-27 |website=Sent.dm}}</ref> In the United Kingdom A2P messages can be sent with a dynamic 11 character sender ID; however, short codes are used for OPTOUT commands.