Plus Suffixing
There’s a pretty nifty feature with gmail that most people don’t know about. I’ve seen people reference it as the “plus hack” or “plus suffixing”. If you have username@gmail.com, you can add a “+” followed by any letters and numbers, and it will still be delivered to username@gmail.com.
I’ve been using this for corporate email forms — if facebook wants an email, they get matthew+facebook, for example. I can then add a precise filter on that “To:” address and delete all email from that company if it “goes evil.”
There’s a glitch in plus suffixing, though — most web forms don’t realize that the plus sign is a totally valid email character, and will reject your plus-suffixed hack.
So what to do?
Well, if you’re using gmail, you’re out of luck. But if you’re using a google apps account for a custom domain (say, your company or family), and you are an administrator for that domain, you can enable “minus suffixing”!
