[rsenk330]

I run into this a lot using a "+" in my Gmail address. I like to use "[e-mail]" for easy filtering, but there are still quite a large number of sites that do not accept this as valid, and it is extremely annoying.

[abrowne]

Years ago, I must have signed up or given my email address to Urban Outfitters with a +uo. They happily continue to send me emails, but their unsubscribe form does not accept it as a valid address! I've tried reporting the bug, but now just send the messages straight to spam.

[jfoutz]

I think you can get paid $25 for each and every one of those. You've made every effort to unsubscribe, and they're still spamming you.