# Get more opens with subject lines modeled on your best emails

> One creator cut subject line brainstorming from 20 to 30 minutes down to about 3 minutes per newsletter this way.

Paste your last 30 subject lines with their open rates and AI builds a scoring guide from your winners, then scores and rewrites the subject line for your next email.

- Page: https://thesolocreators.com/prompts/subject-lines-modeled-on-your-best-opens/
- Category: Make content in minutes
- Made for: Creators, Coaches, Consultants, Small business owners
- Works in: ChatGPT, Claude, Gemini
- Time: About 3 minutes per email
- Effort: Just copy and paste

## The prompt

Fill in the parts in [square brackets], or leave them and the AI will ask you for them.

```text
Below are my last 30 email subject lines with their open rates. Compare the top 10 with the bottom 10 and tell me what the winners have in common: length, wording, curiosity, numbers, personal tone or anything else you see. Turn that into a simple 5-point scoring guide based only on my data. My next email is about [EMAIL TOPIC, e.g. why I stopped offering discounts]. Write 8 subject lines, score each one with the guide and recommend the top two, each with a matching preview text line. Tell me if my sample is too small or too mixed to trust. Subject lines and open rates: [PASTE SUBJECT LINES]
```

## Step by step

1. Copy your last 30 subject lines and open rates from your email tool's reports.
2. Paste them into the prompt with your next email's topic.
3. Pick a subject line and A/B test it if your email tool allows.
4. Refresh the list each month so the scoring guide stays current.

## What you'll get

A scoring guide built from your own best emails, eight scored subject lines and two top picks with preview text.

## Good to know

**Which AI tools does this work in?** It works in ChatGPT, Claude and Gemini. On this page, ChatGPT and Claude open with your prompt already typed in. No paid plan is noted for this one.

**How long does it take?** About 3 minutes per email. It's rated "Just copy and paste". There are 4 steps, listed above.

**What do I need before I start?** Just your details for 2 blanks: email topic and paste subject lines. You can skip any, and your AI will ask for them.

**What will I get back?** A scoring guide built from your own best emails, eight scored subject lines and two top picks with preview text.

Idea spotted on the web, shared by Cait Miller (Kit): https://kit.com/resources/blog/ai-email-marketing-workflows-case-study. The prompt is The Solo Creators' own version.

## Go further

Ready-made skills in the Solo Creators AI Studio (https://thesolocreators.com/studio/) that fit this: Content Chain (One video and one website become a playbook, an audit, a deck, a carousel, TikTok slides, a fact check, a promo, and a teaser, all in one brand); Carousel Generator (Turn one idea into a swipeable LinkedIn and Instagram carousel, ready to post).

From AI Use Cases and Prompts by The Solo Creators: https://thesolocreators.com/prompts/. Free to use; please link back to the page when you share it.