Comment by smartbit

Mattermost adheres to the same tactics as Salesforce: group calls in v10 only with paid tiers whereas free before. Have you considered alternatives?

  - Zulip
  - Matrix/Synapse and Element
  - Mostlymatter [1] without #user limits

See discussions below in this HN thread.

[0] https://old.reddit.com/r/selfhosted/comments/1fp76f0/matterm...

[1] https://forum.mattermost.com/t/solved-is-there-any-limitatio...