Low Importance Messages
The ability to send messages as low importance, so that when recipient is in a call etc it doesnt interupt or show a notification
To clarify, I would like to see this for Chat messages mainly. Team channel messages would also be nice to have.
A co-worker has said he avoids asking questions because he doesn't want to interrupt people. Giving him the ability to flag messages as low importance with the side effect that they never trigger notifications would solve his problem.
Tangentially related, if Important messages bypassed chat Mute by sending the usual one-time notification, that would also solve his problem. Anyone annoyed by someone's low-priority default chatter could mute them, and then they could still be heard when they have something important to say. (It's a little less polite, however, now that I type that "out loud".)
Thinking on it some more, replies to low-priority conversations should inherit the low priority unless other factors apply (mentions, etc.).
Yes, this would be far more useful than it sounds. Being able to send someone a message that won't interrupt them in any way, such as when they are presenting or after-hours. They can see the message later when they check their activity feed or unread messages.