I pull my contact list from our office management software. As we get new clients they go into the management software. Periodically I want to update my constant contact (CC) list.
I would like to pull the entire contact list from my management software and merge it with my current contact list in CC. However, I want to make sure that:
1. any new contacts will be merged into the list.
2. any updated email addresses will update when the list is merged.
3. anyone that unsubscribed will not be added back to the contact list.
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