The Inbox Zapper app uses a simple keyword matching algorithm to help determine which senders may be mailing lists or junk so you can quickly scan the list without seeing all your personal emails. There are times where our system may create false positives or miss a sender, but should work in the majority of cases.

If you would like more control over which emails to unsubscribe and delete, we recommend using our Chrome Extension which inserts the power of Inbox Zapper directly in your Gmail. We use the same algorithm to help flag mailing lists, but you’re also able to mass delete and unsubscribe for any sender you choose with the extension, even if it was not flagged by us.