If you want to stop certain contacts from being added again or receiving campaigns, use the Mailcamp blacklist. The blacklist is a blocking layer that prevents those email addresses from being treated as normal sending contacts.
Where to manage blacklisted contacts
- Go to Settings > Blacklist.
- This is where you manage blocked email addresses.
How to blacklist a single contact
- Open the blacklist page.
- Choose the import or add flow for a single email address.
- Enter the email address you want to block.
- Save the entry.
How to blacklist many contacts at once
- Prepare a CSV file with one email per row.
- Use the blacklist import option.
- Upload the CSV and run the import.
What happens after a contact is blacklisted
- The email address is blocked from being added as a normal contact again.
- The address is excluded from campaign sending.
- Blacklisting helps protect sender reputation and reduces avoidable sending risk.
When to use the blacklist
- For addresses that hard-bounced.
- For addresses you know are invalid, unsafe, or should never receive campaigns again.
- For contacts you want to block more strictly than a normal unsubscribe state.
How to remove someone from the blacklist
- Open the blacklist page.
- Select the email address.
- Delete the blacklist entry if you want to allow it again.
A simple way to think about it is this: unsubscribing stops normal campaign sending for a contact, while blacklisting is a stronger block that prevents the address from being treated as a normal contact in the first place.