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. Log into your account and under the Activity page view your activity and they will show you the errors of the upload including missing email address.