Exclusion lists are very useful advanced functionalities for your campaign creation.
When you choose your contact lists to exclude, Step 3 of your campaign creation, you can also choose the subscribers that you do not want receiving your campaign. Even if these subscribers are present in the recipient lists, the email won't be sent to them.
To create an exclusion list, first you must choose the Lists that you want to send your campaign to, then click on "Select exclusion lists" and start choosing your unwanted lists.
Here, the campaign will be sent to all the Contacts, i.e the Customers & Newsletter subscribers, with the exception of Bad payers.
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