Suppressions

Addresses that never receive marketing messages, how they get there, and what removing one means.

Marketing → Suppressions lists addresses and phone numbers that campaigns must skip. Email and SMS are separate lists.

How an address gets here

A recipient follows the unsubscribe link in an email (reason: user request). The link works without signing in and has no expiry; the page shows a confirm button and unsubscribes only when it is pressed, so a mail scanner that opens links cannot unsubscribe anyone. Campaign emails also carry the one-click List-Unsubscribe header that Gmail and Yahoo show as an Unsubscribe button.
An admin adds it with Add suppression (reason: admin).
A bounce or a complaint adds it automatically, only when the Resend webhook is set up with its secret. With any other mail provider nothing is added.

Emails are lower-cased and trimmed; phone numbers keep digits only.

Remove puts the person back in future campaigns. Do it only if they asked to be subscribed again.

Adding an address that is already listed, or an SMS number with no digits, shows success but writes nothing. The email field is not checked for being an email.
There is no unsubscribe for SMS.
Filter by address, channel and source; 10 per page.

Last updated: October 18, 2026