How does this work? You create a list within the communication center. Then you can upload that list to Constant Contact for email marketing campaigns.

I cannot see the list? When we upload a list to Constant Contact, they create a “Activity” which tracks the progress of the list until status has been completed. This is also where you can see any errors as well.

Can I upload to an existing list in Constant Contact? No You must create a new list.

I notice that some of the contacts in the list did not import why? Most likely that is because they are missing email addresses, which are required for Constant Contact.