Switch to Migadu for our own domains. Migadu mandates
bringing your own domain for email and as such we can
now have separate mail boxes for both our .com & .net
domains. We will drop fastmail once our plan expires.
Also lots of clean up. Seems per account key binds were
broken pretty much ever since these were added.
Would love to keep this enabled but let us face it, no one cares.
And if we want to use this account for sending to mailing lists
best to not enable this.
