I self host a lot of services, but I will never self host my email server If any of my self hosted service would have to go down, I will work on it as soon as I can, but it coudl that it's not that soon. If I would have self hosted my own email server at it would go down, I would have to work on it straight away because usually after 24/48 hours the other email server give up and send back the email (that was directed to me) to the sender, I could not receive airplane ticket for example and a lot of other stuff. What if that would happen when I'm on holiday in the other side of the world??? 🙈