Suppression list

The suppression list blocks an address for the whole team, whatever the list. Nothing is sent to it (campaign, automation, confirmation), it cannot be added to a list, and an import does not bring it back. It is the third tab of Contacts, beside People and Lists; the tab says how many addresses it holds.

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How an address gets there

A hard bounce or a complaint also unsubscribes the person from every list they were on.

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Block an address

At the top of the page: the address, an optional note (“Asked for by management”), Block.

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Import and export

• Import a list: paste addresses separated by line breaks, commas or semicolons, with one note for all of them. Handy for bringing over the blocklist of an older tool.
• Export the list: a CSV file with the address, the reason, the note and the date.

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Take an address off

The bin on a row asks first, in a dialog titled Unblock …?, with what is at stake for the reason it was blocked.

• Hard bounce: the mailbox did not exist or refused all mail. Unblock it only if you know it works again: each new bounce counts against your domain.
• Spam complaint: Unblock stays greyed out until you tick This person has asked to receive my e-mails again. Writing to them without it hurts your domain and, in many countries, breaks the law.

The address stays unsubscribed from its lists: it has to subscribe again, or be subscribed again, to receive anything. The message that follows carries Undo, which blocks it again with the reason and note it had. Only do it when the person asked you to: an address that hard-bounced will bounce again, and someone who complained will complain again.