In Progress Offline and persistent chat messages (PMs)

[Zarel]

An offline message feature is planned.

It depends on an updated PM protocol only supported by the new client written in Preact. So it's blocked by the Preact rewrite.

 

[Cassiopeia]

Since Zarel said it would be fine to PR an implementation of this, with the caveat it'll need some work when preact happens (which can be done now - code comments!) I'm going to work on this.