Hello @JesseW606 ,
You may be able to find a 3rd party-developed integration between Constant Contact and Campaigner, otherwise there isn't anything on our end that'd automatically sync between your CTCT and Campaigner accounts. Generally speaking, any CRM or other contacts-holding program has a way to export those contacts as a CSV or XLS file. Once downloaded to your device, you can upload it into your CTCT contacts dashboard.
See also:
Formatting contact files prior to import
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