Add Contacts to MD5 List

Add one or more Contacts to a MD5 Suppression List

MD5 Suppression Lists are a specific type of suppression list that converts uploaded email addresses to a MD5 hash upon upload. The MD5 Suppression List functionality is case sensitive as it preserves upper/lower case letters in the email address when they are hashed. As a result, it will only suppress email addresses from the sending list if the case of the email addresses match.

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