imagine that you have an address name.surname@gmail.com
imagine that someone else has an address namesurname@gmail.com
this is very similar case to my mom's one. she constantly gets emails meant for someone else - including PII - because she has no dot in email, but the other party has a dot.
I know for sure that her's account is quite old one.
> Not for gmail though; gmail ignores those dots. But some.email@notgmail.com is normally a different inbox if the local part drops the dot.
My own mail server is configured to use a different character besides the `+` for tags and its notion of "same account" is defined by a mysql query. There's no way to know the interpretation of the local part in advance: you can apply various heuristics if you don't mind annoying people; or you can accept the email and verify it by sending an email.
Similarly, I configured my mail server to use the system "tag.user@domain". So you can't use the same heuristic as gmail, because if you try to do an untagged email, you likely just give the tag, which doesn't correspond to a user.
imagine that someone else has an address namesurname@gmail.com
this is very similar case to my mom's one. she constantly gets emails meant for someone else - including PII - because she has no dot in email, but the other party has a dot.
I know for sure that her's account is quite old one.