20 ChatGPT Prompts to Write Email Subject Lines That Get Clicked

Struggling to write email subject lines that people actually open? You’re not alone. The subject line is the first impression of your email—and if it doesn’t catch attention in a crowded inbox, your email gets ignored. But what if you could generate high-converting subject lines in seconds?

With ChatGPT, you can.
This blog will give you 20 powerful, ready-to-use ChatGPT prompts to help you craft subject lines that drive clicks, boost open rates, and grab your readers’ attention.

Why Email Subject Lines Matter

Before we dive into prompts, here’s a quick fact:
💡 47% of people open an email based on the subject line alone.
And if your subject doesn’t connect emotionally or promise value? It’s likely to be deleted or worse—marked as spam.

That’s why using AI tools like ChatGPT can be a game-changer. It gives you endless ideas, styles, and tones based on your audience and offer.

20 PROMPTS FOR HIGH OPEN RATES

1. What are some attention-grabbing subject lines for an email about [product/service/industry]?
2. We are launching [product]. It is designed for [audience]. These are three main features/benefits [feature 1], [feature 2], [feature 3]. Please write a email subject line inviting the reader to buy a product at [percentage]% off.
3. Here is a sales email I have written [insert the email or describe the email]. Come up with a subject line that’s [adjective].
4. What are some effective subject lines for re-engaging inactive subscribers or customers?
5. How can I create catchy subject lines that encourage opens and clicks?
6. How can I create subject lines that are both clear and intriguing, without being too long?
7. What are some ways to use personalization in subject lines to increase open rates?
8. How can I create subject lines that appeal to my target audience’s interests and needs?
9. Can you suggest some subject lines that incorporate the fear of missing out principle?
10. What are some ways to use humor or wit in email subject lines?
11. What are some attention-grabbing subject lines for an email about [product/service/industry]?
12. We are launching [product]. It is designed for [audience]. These are three main features/benefits [feature 1], [feature 2], [feature 3]. Please write a email subject line inviting the reader to buy a product at [percentage]% off.
13. Here is a sales email I have written [insert the email or describe the email]. Come up with a subject line that’s [adjective].
14. What are some effective subject lines for re-engaging inactive subscribers or customers?
15. How can I create catchy subject lines that encourage opens and clicks?
16. How can I create subject lines that are both clear and intriguing, without being too long?
17. What are some ways to use personalization in subject lines to increase open rates?
18. How can I create subject lines that appeal to my target audience’s interests and needs?
19. Can you suggest some subject lines that incorporate the fear of missing out principle?
20. What are some ways to use humor or wit in email subject lines?

Pro Tips for Better Email Subject Lines

• ✅ Keep it under 50 characters
• ✅ Use personalization (e.g., include the subscriber’s name)
• ✅ Add power words (limited-time, free, new, secret, now)
• ✅ Try emojis (carefully) to make it pop
• ✅ Always A/B test for performance

Conclusion

With these 20 ChatGPT prompts, you’ll never run out of creative ideas for writing subject lines that actually get opened. Whether you’re a marketer, freelancer, or business owner, these prompts can save time, boost performance, and increase revenue.