Editing Envelope (section)

==Types of envelopes==

===Windowed envelopes===
{{Main|Windowed envelope}}
[[File:DIN lang - Letter Window.JPG|thumb|Windowed envelope]]
A windowed envelope is an envelope with a plastic or [[glassine]] window in it. The plastic in these envelopes creates problems in [[paper recycling]].

===Security envelopes===
{{Main|Security envelope}}
Security envelopes have special [[tamper-resistant]] and [[tamper-evident]] features.  They are used for high value products and documents as well as for evidence for legal proceedings.

Some security envelopes have a patterned tint printed on the inside, which makes it difficult to read the contents. Various patterns exist.<ref>See [https://www.flickr.com/photos/josephking/sets/72157594547931731/  Security Patterns] by Joseph King for a selection of security patterns from around the world</ref>

===Mailers===
Some envelopes are available for full-size documents or for other items. Some carriers have large mailing envelopes for their express services. Other similar envelopes are available at stationery supply locations.

These mailers usually have an opening on an end with a flap that can be attached by gummed adhesive, integral [[pressure-sensitive adhesive]], [[adhesive tape]], or [[security tape]].
Construction is usually:
* [[Paperboard]]
* [[Corrugated fiberboard]]
* [[Polyethylene]], often a [[Coextrusion#Coextrusion|coextrusion]]
* [[Nonwoven fabric]]

<gallery mode=packed heights=160>
File:Paperboard mailer.jpg|Paperboard mailing envelope showing PSA adhesive with release liner and with tear tape
File:Opening paperboard mailer.jpg|Closed mailer being opened by pulling tear tape
</gallery>

====Padded mailers====
{{Main|Padded mailer}}
Shipping envelopes can have padding to provide stiffness and some degree of [[cushioning]].  The padding can be ground [[newsprint]], plastic foam sheets, or bubble packing.

===Inter-office envelopes===
Various U.S. Federal Government offices use Standard Form (SF) 65 Government Messenger Envelopes for inter-office mail delivery.  These envelopes are typically light brown in color and un-sealed with string-tied closure method and an array of holes throughout both sides such that it is somewhat visible what the envelope contains.  Other colloquial names for this envelope include "Holey Joe" and "Shotgun" envelope due to the holey nature of the envelope.  Address method is unique in that these envelopes are re-usable and the previous address is crossed out thoroughly and the new addressee (name, building, room, and mailstop) is written in the next available box.  Although still in use, SF-65 is no longer listed on the [[United States Office of Personnel Management]] website list of standard forms.<ref>See [https://www.theenvelopepeople.co.uk/envelope-finder/ The Ultimate Envelope Finder] for an example of usage instructions</ref>