AI Email Subject Line Generator
Get twenty subject lines built for opens, with preview text and a split test pick.
Prompt file instant downloadai-email-subject-line-generator.txt
Get this prompt pack and 2,500+ others
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How it works
Ask it something hard.
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Questions before you buy? A person answers, usually the same day: hello@kissmyskills.com
// the file itself
The first lines of the file your AI will read, exactly as delivered. Nothing rewritten for the page.
You are an email copywriter working across curiosity, specificity, personal, value promise and contrarian patterns. You have been activated to deliver 20 subject lines under 50 characters, each with matched preview text and a safest bet pick.
// what's inside
For email marketers, newsletter writers and founders
// two ways to get it
$9/mo cancel anytime, or $59 a year
$9 one payment
Already on Library or Both? This one is included, no need to buy the file.
// ask your assistant
Go to kissmyskills.com/pages/connector and set up the "AI Email Subject Line Generator" skill (handle: ai-email-subject-line-generator) for me
Paste it into Claude, ChatGPT, Claude Code, Cursor or Codex. Your AI walks you through connecting KissMySkills (about 3 minutes, 7-day free trial) and loads the skill. What your AI will read →
Free tool: need ten subject lines right now? Use the free email subject line generator. This prompt pack is for Claude or ChatGPT: 20 lines across five patterns, preview text and an A/B pick.
Marketing & Ads Prompts
Generate 20 high-open-rate subject lines across five proven patterns - with preview text, character counts, and an A/B test recommendation.
This AI email subject line generator prompt produces 20 subject lines across five distinct open-rate patterns - curiosity, specificity, personal/direct, value promise, and contrarian - for any email type, from cold outreach to welcome sequences and re-engagement campaigns. Paste into Claude, ChatGPT, or any AI chat, describe the email and recipient, and get back subject lines with matched preview text, character counts, and a safest-bet vs. high-risk A/B test recommendation.
Subject lines are where most emails die. This AI subject line generator replaces the guess-and-send approach - every output is under 50 characters for mobile inboxes, no emoji unless the brand calls for it, no fake Re:/Fwd: prefixes, and no bait-and-switch copy that misrepresents the email content. The specific, quiet subject line almost always outperforms the loud, generic one. Works with Claude, ChatGPT, or any AI chat model.
After checkout, the download link lands in your inbox. Save the .txt file anywhere on your device.
Claude, ChatGPT, Gemini, Grok, or Copilot - whichever one you already use.
Open the .txt file, copy the prompt section and paste it into Claude or ChatGPT - or add it to a Project so it is always there.
Your AI is now configured as a specialist. Ask it anything inside its domain.
No technical knowledge required.
With Library there is nothing to download. Connect your AI once, then ask for any skill by name.
The AI Email Subject Line Generator produces 20 high-open-rate subject lines across five proven patterns - with preview text options, character counts, and an A/B testing recommendation for your specific audience. Paste it into Claude, ChatGPT, or any AI chat, fill in the bracketed fields, and get structured professional output in minutes.
Download the .txt file, copy the prompt, fill in the bracketed placeholders with your specific details, paste into Claude or any AI chat, and send. No technical setup required.
Works with Claude, ChatGPT, Gemini, and any AI chat accepting text input. Claude is recommended for the best output quality and instruction-following.
Yes. Fill in the bracketed placeholders with your specific context - company name, industry, audience, and any additional requirements. The core structure is designed to be extended without breaking output quality.
This one and 2,500+ others, inside Claude, ChatGPT or Cursor. Cancel anytime.