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Why are contacts not added to my list when I use the listAddContacts method?
API Updated on May 24, 2012
Some of the common reasons why the contacts are not added to the list would be:
- The contact has not clicked on the confirmation email. You can check this by clicking on the "Not Opted-in Yet" link in the contact listing
- The contact could be in your Master Unsubscribe List
- The contact could be already present in your list
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