I've been testing out the self hosted community edition, it works well enough but you'll most likely want to run an image proxy server (it only seems to support

I've been testing out the self hosted community edition, it works well enough but you'll most likely want to run an image proxy server (it only seems to support camo) and mobile notifications are supported but sent plaintext (unless you compile your own apps). You also can't prevent users from 'archiving' (deleting) any channel they have access to. Overall it feels like I was being firmly nudged towards the paid hosted version.