The "+ syntax" does not belong to Gmail, nor was Gmail the inventor of same. foo+bar@domain.net is an ancient tradition, dating back almost to the dawn of SMTP. Of course, the interpretation of the local part is entirely up to the MTA handling it, but foo+bar is pretty widespread. Certainly Sendmail supports it.
I didn't know that. Now that'll be my pet peeve. Im guessing many people have only seen the + as a gmail hack to sign up multiple times on the same site.
The "+ syntax" does not belong to Gmail, nor was Gmail the inventor of same. foo+bar@domain.net is an ancient tradition, dating back almost to the dawn of SMTP. Of course, the interpretation of the local part is entirely up to the MTA handling it, but foo+bar is pretty widespread. Certainly Sendmail supports it.