I personally have a "vanity" domain that spells out my last name (the TLD forms the last two letters). So I just have <firstname>@<domain> for personal stuff, a

I personally have a "vanity" domain that spells out my last name (the TLD forms the last two letters). So I just have <firstname>@<domain> for personal stuff, and then for example git@<my domain> for github, spotify@<my domain> for spotify etc. The mail@firstnamelastname.com approach seems like a clean way to do it as well.