When a Transfer Email Address process occurs between eTapestry and Constant Contact a success notification usually follows. In some cases, a success notification as well as a failure notification is received.
This occurs when eTapestry successfully send the information to Constant Contact, but some of the email addresses are rejected by Constant Contact. This is most likely because of incorrectly formatted email addresses. Email addresses must be formatted as firstname.lastname@example.org to be accepted by Constant Contact. For more information about the Constant Contact Email Transfers, please see eTapestry - Constant Contact Integration FAQs.