You could try this libpurple plugin for Mattermost [0]. Should work fine with finch if you want it to live in a terminal or tmux session or something, or else

You could try this libpurple plugin for Mattermost [0]. Should work fine with finch if you want it to live in a terminal or tmux session or something, or else Pidgin or Adium if you want a more GUI look. Haven't tried this plugin myself though. [0]: https://github.com/EionRobb/purple-mattermost https://github.com/EionRobb/purple-mattermost