DIY!

Use http://kycme.not to find a service to register a domain

https://kycnot.me/search?q=domain

Then pay for anonymous email, that allows custom domains

https://www.privacyguides.org/en/email/

Set a catch-all email address for your new domain.

Njalla, Proton are a good combination, and you have your own, unlimited anonaddy

Love the new logo

The new addy.io domain will be available to those on paid plans shortly.

dang, i thought maybe free users can have this, I guess i need to consider their paid plan after all