Currently thinking about either Tuta or Mailbox.org, but to be honest, I don’t even know many providers.
Something I do not like is limit on number of addresses with a custom domain. Mailbox is at least a bit reasonable with 50 on Standard, but Proton’s 10 on Mail Plus is disqualifying for me.
Tuta has unlimited number, but doesn’t support PGP.
So I plan to check out whatever you guys use.


Yeah that can happen. Usually its just some webshop that got hacked and leaked my email alias. Than it is easy: block all emails to that alias and create a new account whenever I shop there again.
It has happened twice this year that my email was leaked from a company that I could not just remove my account or block all mails. In those cases I changed my email address on their website to a new alias.