I have been using constant contact for a few years to send THANK YOU letters to our email subscribed members. For those that were "unsubscribed" I would retrieve the list of OPT OUTS (by list) and send them a THANK YOU in the postal mail.
It is REALLY a chore now to get at those people. Each time I have to download the entire UNSUBSCRIBED list, sort it by time that approximates when I uploaded the latest list and then manage the redo Thank You's PLEASE offer and export of OPT OUTS by LIST again!
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