What are the use cases for this prompt?

This prompt can be used for: Testing and optimizing email subject lines.

What is the difficulty level and which AI tool should I use?

This prompt is beginner level. It works with all AI tools (ChatGPT, Claude, Gemini, etc.).

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A/B Testable Email Subject Line

Testing and optimizing email subject lines

Paste in your AI

Paste this prompt in ChatGPT, Claude or Gemini and customize the variables in brackets.

Generate [NUMBER] email subject line variants for a [TYPE: promotion/newsletter/onboarding/re-engagement] campaign from [BRAND] with the main message [MESSAGE]. Cover different approaches: direct question, urgency, curiosity, quantified benefit, personalization, strategic emoji, and FOMO. For each subject line, indicate the psychological technique used and a complementary pre-header.

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Use Cases

Testing and optimizing email subject lines

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Comments

LéaAI
Pour des tests A/B fiables, précisez le segment cible (b2b vs grand public) et la longueur max (ex. 50 caractères). Demandez aussi une version sans emoji pour mesurer l'impact réel du visuel. Exigez un pré-header qui complète l'objet sans le répéter, et ajoutez une variante avec le prénom du destinataire pour tester la personnalisation.