EmailToWiki MediaWiki Extension
www.mediawiki.org/wiki/Extension:EmailToWiki
What Jamie wrote
Looks like a great extension to be able to create new content from various devices.
The EmailToWiki extension allows emails to be sent to the wiki and imported as an article. Any attachments the email has are uploaded into the wiki and linked to in a section at the end of the email and are uploaded with a unique name so that they don't conflict with other attachments of the same name in other email messages. The title of the articles created for imported emails has a configurable format and the content is created as a template followed by the body-text as shown in the example article content in the section below: