Create a suppression list
List suppression automatically prevents communications from reaching email addresses and phone numbers marked. This feature blocks delivery to contacts who have opted out or reported spam, helping maintain compliance with regulations while protecting your sender reputation.
In your Marketing dashboard, navigate to: Manage > Audience > Suppressions
Click Import CSV in the top-right corner of the Suppressions page.
Prepare your CSV file for upload:
Include at least one identifier per contact — either a phone number or email address.
Optionally include additional columns for:
Marketing (to suppress marketing messages)
Transactional (to suppress transactional messages)
Platform type (e.g., SMS, WhatsApp, Email)
Use the demo file in the importer as a template to ensure correct formatting.
Upload your suppression list:
Drag and drop the file into the import window, or
Click Browse to select the file from your device.
After the upload completes, the suppressed contacts will appear in the list.
Click the three-dot menu next to any contact to:
View suppression details
Select Unsuppress to allow that contact to receive messages again
Once complete, your master suppression list will reflect all contacts currently blocked from messaging.
