12 email subject lines

12 subject-line variants across 4 styles (curiosity, value, urgency, personal).

For email A/B tests. Real, not "🔥 You won't believe this".

Copywritingemailsubject-lines

The prompt

Copy this into ChatGPT, Claude, Gemini or any assistant you already use — then paste your own email topic + audience underneath it.

Write 12 subject lines for the same email. Group:

**Curiosity** (3) — open loop, not clickbait
**Value** (3) — specific benefit
**Urgency** (3) — real time/quantity limit
**Personal** (3) — feels 1:1

For each: subject + 1-line reason it works. All ≤ 55 chars.

Rules:
- No fake urgency.
- No "Re:" / "Fwd:" tricks.
- No "🔥" or emojis.

Or run it here

Email topic + audience

0/8000

Output

Output will appear here after you click Run.

Or run in your favourite chatbot

Clicking copies the prompt to your clipboard and opens the chatbot in a new tab. Gemini doesn't accept URL params — paste manually with Ctrl/Cmd+V.

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Browse the full free AI prompt library or see more copywriting prompts.