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Boost Email Open Rates: Craft 20 Irresistible Subject Lines With ChatGPT in Just 2 Minutes

Hi Friends 👋

Happy Tuesday! Based on last week’s feedback I wanted to clarify a couple of things.

1. First off, the stories I share here are 100% real - I promise I'm not making any of it up! 30 years ago, I was actually a trekking guide, so all my tales from the trails really happened. I use ChatGPT to help me write it all down.

2. The ChatGPT prompts I published won't always make sense when you read them, but you don't need to worry about that - copy, paste, and let the magic happen!

On to this week’s email:

  • Boost Email Open Rates: Craft 20 Irresistible Subject Lines With ChatGPT in Just 2 Minutes

  • AI created documentaries

  • Beware of AI voice scams

  • ChatGPT gets safer and better for businesses

  • And more…

Let’s get started…

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AI for Marketing 🔗

🔎 Highlights

It took me 23 minutes to make this video documentary using AI [Link]

Criminals are now using cloning voices using AI to defraud. If your family receives a distressed call from someone sounding like a relative and asking for money, advise them to stop and verify it is really them by asking a personal question like "What was the name of my black dog?" before sending any money.” [Link]

Midjourney has FINALLY released Inpainting (Vary region). Now it's easy to edit parts of your Midjourney images. This video shows how [Link]


💬 ChatGPT

Do you think ChatGPT's writing is overly wordy? Fix it - copy ChatGPT’s output to Claude and use the prompt “Make this read better: {your text}” [Link]

OpenAI announced customized fine-tuning capabilities for their GPT-3.5 Turbo model that can match or exceed the capabilities of GPT-4 for targeted tasks when trained on relevant data. This allows companies to optimize the model for their own needs [Link] and AI have also launched Enterprize ChatGPT, where you keep control on your data [Link]

Use this prompt to build a list of objections people may have surrounding your business or product. Use it in ChatGPT Plugins with WebPilot enabled. Prompt: “I am going to provide you with a link to my website. I want you to browse the full site and give me some objections people may have around purchasing my product or working with my business. {INSERT WEBSITE YOUR ADDRESS}”. Get more marketing prompts like this in our ChatGPT Marketing Magic Toolkit [Link]

If you like this newsletter, help me help you…

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Deep Dive

Boost Email Open Rates: Craft 20 Irresistible Subject Lines With ChatGPT in Just 2 Minutes

Why you should care: Tired of sending emails that go unnoticed? Every unread email is a missed opportunity, a potential sale that slipped away.

What you need to know: Learn how to create 20 effective email subject lines in just 2 minutes with these ChatGPT prompts, and then view them in a mock inbox to test clickability.

On with the (short) story…

We're all snowed under an avalanche of emails, aren't we?

The vast majority we ignore.

But some, miraculously, break through our automatic filters. 



They make us click. They gain our trust. They make us open the email and dive deeper.


Great marketers create email subject lines that get opens. 

But it takes skill and lots of time.

Until now…

Before sending out last week’s newsletter, I tested 4 AI created variations of the subject line with a small group in an A/B test.

This helped improve open rates significantly. For example here’s last week email subject line A/B test results:

A/B subject line test results

The winning subject line “Mindset game changer” was nearly 100% better than the worst variation.

That’s a big difference in clicks!

Yet it took me 2 minutes to create these subject lines using ChatGPT.

I’m going to show you how…

How to Use ChatGPT to Create Email Subject Lines

It’s super easy. You just need your headline or title to start and the following prompts.

Step 1. Generate Subject Line Ideas

Don’t worry about understanding the prompt, copy and paste it into ChatGPT and edit the {enter your email subject} part toward the bottom of the prompt.

You are a direct response copywriting specialist. I'm going to give you some sample great subject lines below.

Sample subject lines:

This Is Your Opportunity
Thou Shall Not Steal
Too much email?
Tricks of the trade
This ends today
This is a game changer...
Steve Jobs' Storytelling Framework
Please confirm your subscription
Cut your data eng costs, improve cost insight, and S3's wild durability claims
Lesson #1: Legacy Writers vs. Digital Writers
The 56-yo multi-BILLION-dollar copywriting secret NOBODY talks about
A Message From Rachel
Important: confirm your subscription
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Welcome to my DTC community
87,000+ IRS Agents are frothing at the mouth right now
Confirm your subscription to Dear Freelancer
Welcome to The Beautiful Mess
You've made an excellent choice
Thanks for subscribing to MKT1 Newsletter
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The Nag Metric
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Welcome, content creator!
Will the Government Take Your Gold?
Become Selfless by Being Selfish
I think its time to fire that client
The BIG question
#1 thing that will make or break you as a new business owner
How to get REALLY good REALLY fast
I'll make a bet with you
Lessons 3 & 4 - Good Client, Bad Client
Excited to have you here
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How to earn 374 backlinks from 1 article
Money Words
My most profitable DR secrets, revealed
We have a mole amongst us
Should You Fear AI?
12 simple tips that give me the copywriting edge
7 Key Social Selling Tips, According to Experts
Things are about to change
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Millions made from 3 tests
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25 SEO Trends to Leverage in 2023
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Thou Shall Not Steal
America is Dead. Long Live America.
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You're going to die
Personal invitation for you
How to become extraordinary

I need a subject line for an email about {enter your email subject}

Please use the above subject lines to give me 30 suggestions. Some should be directly related to my email subject, and others should just be designed to get the email opened based on curiosity. Don’t captialize every word.

I prefer:

1. 3 word subject lines
2. Wrttien in sentence case

Give me 20 options, some "directly related" and other "Designed to Spark Curiosity"

ChatGPT Email Subject Line Creator Prompt

You’ll get an output like this:

…then you can ask for more variations of the ones you like.

But it’s still hard to visualise which would have the most clicks.

So, let’s make an inbox…

Step 2: Mock up an Inbox for Visualisation in ChatGPT

It’s much easier to choose a shortlist if we can visualise the results.

Use this follow-up prompt to create an inbox mockup from your first list:

Can you mock up something that looks like an inbox with all these subject lines? Use a code window which looks like gmail mobile and make up details if you dont have them, but use the subject lines.

ChatGPT Email Subject Line Inbox Mockup Prompt

You’ll get something like this:

Scan through and see which email subject lines grab your attention. Try it out on other people and also ask ChatGPT which one it likes best to create your shortlist.

Now it’s time to superpower this technique…

Step 3 - God Mode: Improve your subject lines with a huge subject line database

Now source inspiration from the copywriting greats. Here’s how.

Open a new Gmail account and sign up for as many marketing and direct response email newsletters as you can.

Set up an automation in Zapier to grab the subject line of every email that lands in the inbox and save them to a Google Sheet.

Now you have an ever-increasing database of subject lines you can use with the first prompt.

OK, I get it, that’s too much work…

So I’ve already done this for you grab 1258 email subject lines here.

Download a copy of this CSV file, go to ChatGPT Code Interpreter, upload the CSV and run the prompt below, again editing for your subject line.

Here’s the prompt:

You are a direct response copywriting specialist. I'm going to give you some sample great subject lines below.

I need a subject line for an email about {enter your email subject}

Please use the above subject lines to give me 30 suggestions. Some should be directly related to my email subject, and others should just be designed to get the email opened based on curiosity. Don’t captialize every word.

Use the file uploaded for ideas for email subject lines.

I prefer:

1. 3 word subject lines
2. Wrttien in sentence case

Give me 20 options, some "directly related" and other "Designed to Spark Curiosity"

ChatGPT Code InEmail Subject Line Creator Prompt

Upload the CSV by clicking the (+), submit the prompt and you’ll get more new ideas from the whole database:

Boom!

And just like that, you’ve gone from no subject lines, to crafting hundreds of subject lines, with the inspiration of the copywriting greats, in a matter of minutes. Because you have learned to leverage the power of ChatGPT to accelerate your writing AND your email subject line creation!

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Thanks for reading,

Tim

Tim O'Shea
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