Hi,

I have a list of 8K contacts in csv format which we use for email marketing, so the list is imported in our mail campaign software.

So we were running this campaign and about 2K emails were sent out and for some reason the campaign crashed, so we moved to a new email marketing software.

Now that the system is setup and running (tested OK) we want to send out this campaign again, but do not wish the 2K recipients (who have already received this campaign) to get a second copy. So I have the list of 2K recipients who have already received the email in CSV format.

How can I generate a new list that includes only those who haven't received the email campaign?

Would really appreciate some help on this, pls.