They mostly likely have thousands of users running on corporate or state platforms so it's not a "one off project" supported by a couple individuals, it's an actual stack with probably a large dev team.
However, Linagora has been entangled in a legal battle for 10 years with former employees that founded BlueMind[0], a competing offer. Latest episode in the saga appears to be "back to square one" with the legal case coming back to a fresh start based on complex legal issues [1]
[1]https://www.zdnet.fr/blogs/l-esprit-libre/blue-mind-linagora...
Twake Mail backend is a fork of https://github.com/apache/james-project but it seems their app can work with any JMAP server.
Twake Drive (web app) and Twake Mail (mobile) seem original.
* For something pitching itself as open source, the source is hard to find. And I couldn't find any source for the server components, though I admint the site is obtuse enough that I may have simply given up looking.
* I don't see any documentation on self-hosting so far.
* I don't see any documentation of their pricing for their hosted service.
This all combines to make it nigh-impossible to evaluate. I hope it turns into what the headline says it is, but I don't see a way to assess that just yet.
The github link has the third line in the readme say "run in docker".
It appears to be a suite and the github link only takes you to their drive alternative, so you have to go up a level to see the other projects. It could be better, but it wasn't completely terrible.
The deployment documentation seem appropriate for Docker-based services: https://github.com/linagora/ToM-server/blob/master/docker.md https://github.com/linagora/tmail-backend/blob/master/tmail-... (although Twake Drive's docs seem under construction)
People happily mix and match parts when they feel that they understand the subject area. I bet the IT team (even just the CTO) in a company that considers to use OSS instead of the typical O365 or G.Suite has plenty of opinion, and likely expertise, to consider at least various integrations, and possibly introducing other components. A suite still has a lot of appeal.
But the idea is to offer a suite, much like Google's, with all familiar tools present and integrated by the common auth / account system. I bet this is geared towards selling the services to governmental bodies and some privacy-conscious businesses, RedHat-style. To do that successfully, you have to check certain boxes.
The breadth is quite impressive, honestly.
thinking specifically of immich + simplenotes, which have complex docker compose stacks, and at least immich requires a lot of TLC to keep the backend in sync with the frontend. fail at this and your images will not sync.
(and I am not knocking it, I use it + love it)
these apps are in a sense featureful, with ML indexing and other search features, but in a sense just auth wrappers on file storage; hosting them they should, somehow, be simpler than it is