We ended making the switch and committed to Discord. We're now looking at Rocket.chat as a backup in case Discord goes down. But Slack is now completely out of the picture for our team.
I’ve advocated for an idea where Mattermost is to be used as a “bunker” where it is hosted on a raspberry Pi (or somewhere else) and acts as a digital bunker if your critical infrastructure (slack, teams, exchange?) is compromised somehow.
I know it's a tough spot, but if it were usable from GitLab with zero config that would be great for fallback.
To enable Mattermost, you can add the Mattermost external URL in the config file, and run `sudo gitlab-ctl reconfigure`. I'm wondering if that's something you've tried? https://docs.gitlab.com/omnibus/gitlab-mattermost/#getting-s...