Reminder icon for pending written messages

Sometimes we write a message but don't post it, by mistake, because we switch to a channel where we have been mentioned, to close Discord, because the phone/laptop battery has run out or whatever. Discord saves the message though, and that's great, really helpful, but sometimes we can forget about it, even for a long time, so seeing a reminder icon somewhere on the channel button or somewhere else (but clearly visible) would be great.