Meseta

Even if the messages are end to end encrypted I wouldn’t trust a third party with that data (unless it was a company that does it for a living.)

I’d probably recommend running your own instance, I imagine for that few users it would be pretty cheap. Though maintenance is probably the biggest issue there.

Or just use a third party Matrix server but send client info over email using GPG keys. That would cost you nothing.

I’m not sure if I have bad luck but every time I’ve tried Ubuntu I’ve had stability issues. Constant crashes and things I’ve never run into in other distros.

It makes it hard for me to recommend it to new users.