The open-source Mattermost intentionally lacks a couple of pieces of basic functionality to push you to pay, like the ability to stop regular users from deleting channels, and no way to set a reasonable password policy that requires more than 5 characters.
Mattermost (and specifically their CEO, who is vigorously replying to messages on this thread, but probably won’t engage with this one) haven’t responded positively to requests to include these basic features:
As far as I’m concerned, Mattermost isn’t any kind of a competitor to free-tier Slack until these issues are resolved. This exact thing has turned more than one team I’m on away from Mattermost.
Mattermost (and specifically their CEO, who is vigorously replying to messages on this thread, but probably won’t engage with this one) haven’t responded positively to requests to include these basic features:
https://github.com/mattermost/mattermost-server/issues/6320
https://github.com/mattermost/mattermost-server/issues/5935
As far as I’m concerned, Mattermost isn’t any kind of a competitor to free-tier Slack until these issues are resolved. This exact thing has turned more than one team I’m on away from Mattermost.