Segmentation Reality Check Prompt

Takes your actual segment list and send history and tests whether segmentation is doing real work — changing message, timing, or offer — or whether it's cosmetic list-splitting that gets the same email sent to everyone anyway.

Built for anyone who's set up segments in their ESP and assumes that alone is "doing segmentation." Diagnoses by checking what specifically changes between segments on a real send. Walks away with a verdict on whether segmentation is functional and the one segment worth building next.