We do apologize for any frustrations with managing your contacts. In September 2016, we removed the ability to add or create new contacts with multiple email addresses, and subsequently all existing contacts with multiple email addresses were split into multiple contact records. In addition, deleting a contact from your account enables you to add him/her back in at any time:
Whereas, Unsubscribing a contact permanently removes him from your account and changes his permission status. He cannot be added back into your account unless he re-subscribes through a sign-up tool:
If you'd like to send us an email to social_support(at)constantcontact(dot)com with your Username, a reference to this post, and the original exported file of contacts we can help you get them added and/or re-subscribed to your account again.
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