So it turns out I have an extremely large number of cool email addresses that I didn't even know about. Here is an email I just sent: And wheeee, here it is! For the full details go read the post on the official gmail blog. While coming up with crazy variants on your email address and giving them to people is funny, the linked post points out the real advantage of this behaviour: you can set up filters to label and process your email based on the address it was sent to. I often end up setting filters to hide or simply label certain email that isn't ACTUALLY spam - but now instead of having multiple filters I can just use email@example.com to register for stuff and use a single filter. So what are you waiting for, send me an email at firstname.lastname@example.org to celebrate this discovery!