I run a fairly big instance with hundreds of users. We wanted to support/promote a more free/libre alternative to Slack, but you are basically saying we should not use Mattermost?
(I think that channel deletion was a concern at some point, but archiving mitigates it, we are happy users in general)
We offer a non-profit license for open-source projects [0] with special nonprofit pricing. We also plan to move the System Permissions Scheme into the open source Team Edition with the 6.0 release on September 15 [1].
Thanks for being a user, feedback is always welcome!
[0] https://mattermost.com/nonprofit/ [1] https://forum.mattermost.org/t/granular-permissions-coming-s...