Isn't that a gmail-only feature?
It's almost as old as SMTP - with various implementations in exim, qmail, postfix etc (plus/minus, minus, plus seperator).
"email suffix addresses".
Gmail and o365 support it, not sure about Apple.
https://www.rfc-editor.org/info/rfc5233/
alt Hacker News
It's almost as old as SMTP - with various implementations in exim, qmail, postfix etc (plus/minus, minus, plus seperator).
"email suffix addresses".
Gmail and o365 support it, not sure about Apple.