I know this because I use SimpleLogin to provide each service with its own specialized email address. You can see in the picture the address starts with bixi@sl.***
It’s also possible but unlikely that they sold user data.
Haha yeah I got the same tantot email, I also use my domain name but I wasn’t sure if it was a pure chance like I use a catch-all. Thank you for confirming!
It would be really convenient to have an automatic signature system with SimpleLogin with protonmail as proposed in this blog: https://kevincox.ca/2022/07/07/signed-email-addresses/ like that, only the email with the single signature can receive messages, and messages lost by bots that try random domain names that could have a catch-all are automatically rejected.
Update: simplelogin does something almost as I would like, but it’s not as well integrated as I would like
Apple’s native translation Edit: for those browsing by All, didn’t see the community at first :)