Hello @TeriD19 ,
I'd recommend re-uploading the contact via the type/paste multiple or file upload methods. However, the contact would still be considered unsubscribed from you, even doing this.
Ultimately, the most efficient method for the contact to resubscribe to you would be for them to go through one of your sign up forms, either a landing page form or one coded into your website.
If they’re unable to get signed back up through a sign up form or through the resub email, you can request our Review team do a manual override of the unsubscription. You’ll need to get an email directly from the contact explicitly stating they want to be resubscribed. Then you’ll need to call into the Review team, and follow their processes from there.
Since there are a number of legal and Compliance-related elements to unsubscribing and resubscribing, we have to make sure one of these processes is followed.
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