The risk about self-hosting that still worries me the most: what happens when you piss someone off, they email you highly illegal images, and then they alert the authorities? It's in your mail, on infrastructure you own (for the moment), and possibly in your home or on your personal devices. With a larger provider, they would at least have a chance at blocking the content, and hopefully be involved in any investigation that happened. They probably know how to deal with that well because it probably happens from time to time. If you self-host, it's probably going to be a very direct, unpleasant, and harmful matter between the authorities and you, and the authorities will probably not be willing to understand your hacker ethos if they can just assume you're an evil scumbag.
EDIT: I'm assuming here that, if you use e.g. gmail, you would be suspicious of any unsolicited attachments and not sync them to your personal devices.
EDIT: If you're not worried about this happening once, what about if it happens once a month for several years?
EDIT: I'm assuming here that, if you use e.g. gmail, you would be suspicious of any unsolicited attachments and not sync them to your personal devices.
EDIT: If you're not worried about this happening once, what about if it happens once a month for several years?