7 Free AI Email Subject Line Generators in 2023

Subject lines are super important to boost open rates, and writing a perfect subject line can take a lot of effort and time. Lucky for you, there are a lot of artificial intelligence tools that you can use to generate AI email subject lines that are compelling and highly converting. In this guide, we will discuss some of the best AI email subject line generators.

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Below is the list of free AI email subject lines created with AI-powered tools and how you can use them for your emails:

1. Mailmodo

Mailmodo AI subject line generator effortlessly creates captivating email subject lines at double the speed with Mailmodo’s campaign delivery, and supercharge your email open rates through our state-of-the-art AI subject line generator.

It helps to:

• AI generate subject line options based on email content.
• Use advanced options to craft more personalized variations.
• Specify the tone based on your target audience and campaign goal

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2. Encharge

• The goal of your email
• Your company/product name
• The tone of the email

Here’s how I generated AI subject lines informing the users about the ongoing sale at Microsoft using Encharge. It generated these email subject lines:

This is a free-to-use tool that does not require any login.

3. YAMM

I used YAMM to generate subject lines for a new local shop offering discounts on their first visit. These were the results:

This tool is free to use.

4. Mailmunch

• The goal of your email
• Your company name
• The tone of the email

For a trial, I tried generating some AI email subject lines, reminding the customer of their subscription renewal. It helped me generate the following subject lines.

The tool is free to use.

5. Copy AI

In this case, I asked the AI chatbot to generate catchy subject lines about a checklist for mothers taking their babies out for the day. It helped me generate around 20 creative AI email subject lines to choose from:

The tool is free to use.

6. Wordkraft

I generated a few email subject lines on Mailmodo’s interactive emails. It generated a few for the first time. As I wasn’t satisfied with the result, I tried to generate more, but it gave me almost the same results. It just changed a few words, which weren’t very useful.

This tool requires login to use and comes with a free trial with limited word usage.

7. Storylab

I generated a sales email subject line using Storylab, and these were some results. Although it generated 4 email subject lines, I found them generic and not so engaging.

This tool gives you only 5 free runs. You need to upgrade to a paid plan for unlimited runs.

How to write an effective AI email subject line?

AI tools like email subject line generators can greatly help generate relevant, personalized, and catchy email subject lines. How they do it:

• Most AI email subject line generators would ask you to feed some information or context about the email.
• You can provide information like the tone, type of email, your name, recipient’s name, keywords, etc.
• After you have added the information, the AI email subject line tool will analyze and understand the context to generate multiple numbers of AI email subject lines.
• You can edit the subject lines and ensure they resonate with your goal or purpose, as AI might only sometimes be able to generate creative copies

Many AI subject line generators can be used as an extension to your email software, while some are not, for those you need to copy and paste.

Takeaway

These tools can help generate effective AI email subject lines and test them before you hit send. Remember that all these tools are AI-powered, but AI can misunderstand and make mistakes, so always proofread your subject lines rather than copy and paste.