We had a timed email campaign that sent out already. we have some new users that we wnat to add to the list and send to. Note again that this is an email send campaign. It seems it is not possible to add users to this campaign? We would need to create a new campaign?
You're correct, you cannot add people to an email program after the fact. You'd either have to duplicate the program and send it to only those who you missed, use the smart campaign method you mentioned, or you can send one-off via the Lead Actions > Marketing options in a lead list view.
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