> Correct. State events are key/value data associated with a room - eg who’s in it, what it’s called, whether it’s encrypted. obviously you can’t expire them af

> Correct. State events are key/value data associated with a room - eg who’s in it, what it’s called, whether it’s encrypted. obviously you can’t expire them after N days otherwise the structure of the room would disintegrate. It has nothing to do with E2EE messages. E2EE-encrypted message are persisted by Synapse as state events. Or, maybe more precisely, if I set a message retention policy of X days, rows in event tables associated with E2EE-encrypted rooms, which are created when messages are sent to that room, and which are older than X days, are not removed.