The College Leads Suppression Tool
This enables you to suppress your existing customer email file from the contacts you would like from us. It's incredibly simple. Letting you purchase only net new contacts. It is a great way to add-on to your current house file or update a past purchase.
On your way to the cart, at the bottom of the page. Click on "Proceed to Suppress". Upload a One Column CSV with your email contacts and the word "Email" as the header of the column.