I'm not the parent-level poster but I've stood-up a Mattermost instance a few times and it's really easy to get going and is good for a text-IM/DM channel/group service. The desktop app or web-based interface work quite well and the architecture is pretty sane, Javascript front-end, golang-based "backend", Postgres database.
But, there are some frustrating aspects.
LDAP is only available in the "enterprise" edition which is kind of crazy and there is no price-break for < 10 users. So for personal / non-commercial usage if you want LDAP you're placed into an enterprise bucket. I reached out to Mattermost and pointed this out and even said "Hey, what about offering a 10-user license for some reasonable fee?" No response.
But, there are some frustrating aspects.
LDAP is only available in the "enterprise" edition which is kind of crazy and there is no price-break for < 10 users. So for personal / non-commercial usage if you want LDAP you're placed into an enterprise bucket. I reached out to Mattermost and pointed this out and even said "Hey, what about offering a 10-user license for some reasonable fee?" No response.