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How to Use ChatGPT for A/B Testing Emails?

As is widely acknowledged, the popular topic of recent times is shaping up about how widely ChatGPT can be used in the digital world. At Mailsoftly blogs, we are examining how we can combine this new technology with digital marketing and email marketing to speed up our work as much as possible. In this article, we will tackle the issue of using ChatGPT within the scope of A/B testing, a somewhat neglected aspect of email marketing. So, Let's get started to find out A/B testing and ChatGPT process!

What is A/B Testing?

A/B testing or email testing is a method of comparing two versions of a product or a service to determine which one performs better. It is commonly used in marketing, product design, and software development to optimize the user experience and increase conversions.

In A/B testing, two versions of a product or service are created, with each version having one difference. For example, in a marketing campaign, one version of an email might have a subject line that reads "New Product Launch!" while the other version has a subject line that reads "Introducing Our Latest Innovation." The two versions are then randomly sent to a sample of the target audience, and the performance of each version is measured, usually through metrics such as open rates, click-through rates, or conversions. The version that performs better is then selected for wider release.

Therefore, A/B testing is a useful method for making data-driven decisions and improving the effectiveness of your product or marketing campaign. 

For more details on the subject such as What Is The Purpose of A/B Testing In Email Marketing? and Why Should I Do A/B Testing? Please check our blog post at What Is A/B Testing and How To Do It?

How to Use ChatGPT for AB Testing Emails

What is A/B Testing For Email Marketing?


A/B testing for email marketing is a method of comparing two different versions of an email campaign to determine which one performs better. The goal is to improve the performance of the email by making data-driven decisions on which elements to change and test.

A/B testing involves creating two versions of an email, Version A and Version B, with small variations in elements such as subject line, sender name, call-to-action, or layout. The two versions are sent to a sample of the email list, with half of the recipients receiving version A and the other half receiving version B. By comparing the performance metrics of the two versions, such as open rates, click-through rates, and conversion rates, marketers can determine which version is more effective and make changes to the less effective version for future campaigns.

Although at first glance it may seem like an extra workload, A/B testing is an important tool for email marketers to optimize their campaigns and improve their overall performance. By continuously testing and making data-driven decisions, marketers can ensure that their emails are as effective as possible in reaching their target audience and achieving their marketing goals.

How Can I Use ChatGPT Methodology for Email A/B Testing?


As far as we know ChatGPT cannot perform the actual A/B testing itself, because it is not an email marketing software, like Mailsoftly is. However, ChatGPT can be used as a tool for generating ideas for example with the aim of creating different subject lines, personalization, content optimization, testing different formats and CTAs for your A/B testings within the scope of email marketing. 

Let’s see it in details: 

  • Subject line: By using ChatGPT to generate ideas for subject lines, you can broaden your perspective and come up with new and creative ways to approach your email campaigns. 
  • Personalization: ChatGPT can be used to generate personalized content for your emails, such as greeting lines or email body text. You can use this personalization in your A/B testing to see how different levels of personalization impact the success of your email campaigns.
  • Content optimization: ChatGPT can generate suggestions for optimizing your email content, such as adjusting the length, tone, or language used in your emails. You can use these suggestions in your A/B testing to see what changes have the biggest impact on your email performance.
  • Testing different formats: ChatGPT can suggest different email formats, such as using images, videos, or infographics in your email. You can use these suggestions in your A/B testing to see which formats are most effective for your target audience.
  • Testing different calls-to-action: ChatGPT can generate ideas for different calls-to-action that you can use in your email campaigns, such as buttons or links. You can use these suggestions in your A/B testing to see which calls-to-action are most effective for your target audience.

However, it's important to keep in mind that the actual testing and analysis of results must still be performed manually.

Subject Line & Content Optimization

Now, let’s dive a little bit deeper. As far as we know, Chatgpt works best with clear prompts and unique instances. Once you provide the correct information and tell all your expectations with a crystal clear attitude, it can definitely help to create successful results for A/B testing in email marketing. However you should provide the written information. Here's how you can use ChatGPT for generating ideas for subject lines & content optimization for A/B testing processes:

  1. Provide information about your email: Provide ChatGPT with information about the purpose and content of your email, such as the target audience and main message.
  2. Request subject line suggestions: Ask ChatGPT to generate several different subject line ideas based on the information you provided. Or you can Provide a few examples of subject lines or content that you have used in the past, or that you are considering using in the future.
  3. Use the ChatGPT model to generate additional ideas based on the information you provided. For example, you could ask the model to "Generate 10 unique and catchy subject lines for a promotional email targeting young professionals." or "Generate suggestions for optimizing the content of a newsletter aimed at retirees.
  4. Evaluate the suggestions: Review the suggestions generated by ChatGPT and use them as a starting point for your own creative process. You can refine the suggestions, combine them, or use them as is.
  5. Conduct A/B testing: Use the generated subject lines and content suggestions in your A/B testing and analyze the results to see which versions perform best.

By using ChatGPT in this way, you can generate new and creative ideas for your email campaigns and use A/B testing to determine the most effective subject lines and content for your target audience.

Creating the best and catchy email subject line to increase open rates is a good point to use ChatGPT within the purpose of  email testing. Therefore let’s ask the chatbot on the subject “How can A/B testing be used to get the optimal subject line for my emails?” Below are the answers and tips that ChatGT provides to us: 

“A/B testing is a method that can be used to determine the optimal subject line for your emails. It works by creating two versions of an email, each with a different subject line, and sending them to a random sample of your email list. The subject line that generates the highest open rate is considered the optimal subject line.

Here's a step-by-step guide on how to perform A/B testing for your email subject lines:

Define your objective: Determine what you want to achieve with your email campaigns, such as increasing open rates, click-through rates, or conversions.

Create two versions of your email subject line: Each version should be different but still relevant to the email's content.

Split your email list into two groups: Randomly divide your email list into two groups, with each group receiving one of the two subject lines.

Send the emails and track results: Send the emails to the two groups and track the open and click-through rates for each subject line.

Analyze the results: Compare the results of the two subject lines to determine which one had a better open rate. This is the optimal subject line that you should use in your future email campaigns.

Repeat the process: Repeat the A/B testing process regularly to continuously improve your email campaigns.”

Finally ChatGPT warns us that it is important to note that A/B testing may not always produce clear-cut results, and you may need to conduct multiple tests to determine the optimal subject line.


ChatGPT Examples for A/B Testing Subject Lines for Valentine’s Day

Let’s give an example and a prompt line to ChatGPT to see some actual results: 

We need subject lines for an email marketing campaign based on “A luxurious dinner full of surprises for Valentine's Day.” Target audience : Rich upper-class men over 40 Could you please create different email subject lines for A/B testing?

The ChatGPT provides below results: 

Sure, here are five different email subject lines for an A/B test, based on the description you provided:

  1. "A Valentine's Day Dinner Beyond Your Wildest Dreams"
  2. "Indulge in a Lavish Valentine's Dinner - Surprises Included"
  3. "Make This Valentine's Day Unforgettable with a Gourmet Experience"
  4. "Treat Your Significant Other to a Night of Opulence and Surprises"
  5. "Experience Love Like Never Before with a Luxurious Valentine's Dinner"

These subject lines are designed to appeal to a wealthy, upper-class target audience and highlight the luxurious and surprising aspects of the dinner. By A/B testing these subject lines, you can see which one resonates best with your target audience and leads to the highest open rates and conversions.

Then we demand the chatbot to create an email body as well to use in our project with a prompt line: "Generate a persuasive email body for an upscale Valentine's Day dinner event targeted towards wealthy men over 40."

Let’s check the result : 

ChatGPT for A/B Testing

You can sign up Mailsoftly now to use these subject lines with this email body right now! 

Create your email campaign and A/B testing procedure for your next email marketing campaign with Mailsoftly! 


To wrap up the issue by using ChatGPT in this way, you can generate various subject lines and a personalized email body that is tailored to the interests and preferences of your target audience in order to use within the scope of A/B testing. 

As a consequence you can discover that Mailsoftly's A/B testing feature is a game-changer for anyone looking to improve their email marketing results. With its easy-to-use interface, you can quickly and effectively test different elements of your emails, such as subject lines and content, to see which ones perform best. This information is crucial for maximizing the impact of your email campaigns and ensuring that your messages are seen by as many people as possible.

Hence, if you're looking for a way to take your email marketing to the next level, be sure to give Mailsoftly a try. With its powerful A/B testing feature, you'll be able to optimize your emails and achieve better results in no time. So what are you waiting for? Try Mailsoftly today and see the difference for yourself!