Error When Uploading Suppression Lists

Error When Uploading Suppression Lists

Are you experiencing an error when uploading your Suppression Lists?

You could be missing column headers in your upload. 

When uploading Suppression or Known Customer Lists you must...

  1. Use our headers
  2. Upload in a .CSV format
  3. Upload a list with less than 100,000 contacts 

Header Example:





We have attached Sample Files for both Known Customer and Suppression Lists. 

Please save them to your documents for ease of use in the future! 

Please contact support if you need to upload a list of 100,000 or more. 


Uploading known customers in a large file.