As a firstname user, life isn't easy when it comes to notification spam b/c people think that putting a space between first and lastname still gets sent to the correct user. I've basically stopped checking them.
I have a similar issue on Github and Gitlab.com - my handle there (same as here) overlaps with a certain annotation from Java's Hibernate, so I get a lot of @mentions from random repos.
(And all that because Github and Gitlab are both case-insensitive when matching @mentions.)
A lot of this is automatic - someone uses the proper @Annotation in a commit messages or pull request name, and I get an e-mail that I was just mentioned in some random repo.
My college email forwarding is just my first name. (We got to choose our username and I got in early.) It doesn't really happen any longer but back in the day when a lot of people were not terribly familiar with the new-fangled email thing, I would get fairly regular emails--including some that were probably at least a bit sensitive--addressed to my first name by people who just assumed the email would somehow get to some other person with the same first name.
As a firstname user, life isn't easy when it comes to notification spam b/c people think that putting a space between first and lastname still gets sent to the correct user. I've basically stopped checking them.