Messages: As an examiner, I want to be suprised with one additional feature

The Messages sub-app should be extended with at least one additional custom feature. You are free to choose whatever you like. Some examples:

• Encrypted messages
• Support for "rooms" or "channels."
• Emoji support

To make sure that the feature is noticed by the examination, please make a comment next to this Issue in the Issulist at the Release-report. Comment short, like: "Encrypted messages."