Add filter to show only channels with unread messages (or recent activity)
I like Mattermost but frequently the list of collaborators gets long and I have to scroll between active chats.
I think a filter feature would be useful to show only certain chats, e.g.
- channels with unread messages
- filter by text
Combined with "pinned channels" this would help to focus on the active stuff even without giving Mattermost an entire (large) screen.