Today I learned

This trick exists since last century but I only learned it today.

You can insert a plus sign followed by any word in your gmail email address, like myname+test@gmail.com. Gmail will ignore the + sign and everything that comes after. In this way you can have as many email address as you want.

This trick is useful to triage incoming emails: registering with myname+newsletter@gmail.com to a newsletter and creating a rule to send all the “newsletter” emails to a specific folder.