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Email & Lifecycle

Subject Line Autopsy Prompt

  1. 01

    Open any AI you use. Free or paid, ChatGPT, Claude and Gemini all work.

  2. 02

    Copy the complete prompt below using the button.

  3. 03

    Paste into the chat and follow the instructions.

  4. 04

    Answer honestly and concisely when asked.

What this prompt does

Takes your last several send subject lines paired with their open rates and finds the actual pattern separating what worked from what didn't — not "use curiosity" or "add emojis." Built for anyone whose open rates are inconsistent or declining and who's been guessing at subject line fixes without evidence.

Diagnoses whether the problem is length, vagueness, sender fatigue, or a mismatch between subject line promise and email content. Walks away with the named pattern and a rewritten version of your next subject line using it.

Your prompt