I can't tell from the guides or the site, is Migadu running a hosted email system? Anyone tried it yet? If it is hosted, I wonder what their deliverability rates and reliability look like?

This looks awesome.

Is there such a thing for self-hosting as well? As a sysadmin, the time I'm dealing with dovecot, postfix, exim and the whole lot feels like the stuff I'll be watching reruns of for eternity down in hell.

Can I send email as admin@mysite.com through this (actual site is hosted on Linode)? I've been using mandrillapp for this purpose, but it is going paid-only so I'm looking for alternatives.

The FAQ states that they don't support catch all email addresses. Does anyone know of a service like this that does?

Correct me if I'm wrong, do you guys limit the number of messages sent on a daily basis?

Seems that Mailgun + Gmail would give you the same and cheaper. Am I missing something?