Mattermost, Inc.

How does forum.mattermost.org store its archives?

I’m interested in the archiving features of this program, as my company is looking for this type of solution.
Where are they saved and in what format? Any encryption?
Who has access to the archives? Can access to them be restricted?
I’m sure I’ll think of more questions as time passes, but that’s all for now.

@Nemet, please see http://www.discourse.org/