Send out campaign email again

I started a series with 4 campaigns, the first campaign went out well but my client decided to change the email address of one person, I did the change and nothing, I removed the person and readded them with the new email and nothing, how can I do something simple as to trigger sending an campaign email like the others received?



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[edited by: emmosophos at 7:38 PM (GMT -8) on 16 Feb 2024]