> This logic is why so many Web sites today won't let you use a plus sign in email addresses, which ruins a really nice Gmail feature. Contrary to popular beli

> This logic is why so many Web sites today won't let you use a plus sign in email addresses, which ruins a really nice Gmail feature. Contrary to popular belief, it is not a gmail feature. I first heard of the + as destination filtering in the very early 90s at CMU where it was broadly used. Every single email address I've had since then has support the same (and notably, apart from a test account, I've never used gmail much, so that's not including gmail).