Email Permutator | 4K × 480p |

In the early days of the internet, a salesperson would have to send a test email to all six addresses and see which one didn't bounce. Today, permutators are paired with SMTP verifiers—scripts that "shake hands" with the mail server to ask, "Does this user exist?" without ever sending an actual message.

: A common tactic is to paste these variations into the "To" field of a draft email; hovering over them in services like Gmail can often reveal a profile picture or linked social data for the correct address. Top Tools and Implementation email permutator