Generate Effective Email Subject Lines: Top 4 AI-Powered Tools

With email marketing being one of the most utilized means for business promotion, it’s important to ensure that it’s not only being implemented efficiently but also effectively. While the content of the emails is just as important, it can be easy to neglect the significance of a great subject line.

Fortunately, AI tools can now help generate them for you. In this article, we’ve gathered the best AI-powered tools for generating email subject lines that help boost business credibility and deliverability rates. Let’s dive in!

Why Do You Need Compelling Email Subject Lines?

Although they seem like a minor detail, email subject lines have the potential to make or break your marketing emails. It’s the first thing your target audience is going to see, and can therefore set the tone for how a potential customer might respond to your marketing strategy.

Below are the different advantages of having a compelling email subject line:

1. Grabs Attention

While marketing emails are a great strategy from a business standpoint, customers are not always going to have a welcoming response. With the hundreds of emails we receive every day, it can sometimes be easier to dismiss certain emails as spam if they seem uninteresting.

With a compelling subject line, however, customers may be more likely to take up an interest in reading emails and increase the chances of engaging with your business.

2. Better Deliverability Rates

Even if you send out over a million emails every day, it won’t necessarily translate to sales if they’re not even being opened by customers. Luckily, an effective subject line can help with just that. By enticing customers to open emails, you’ll have better chances of communicating your message to your target audience. 

3. Helps Avoid Being Marked as Spam

Unfortunately, even the best marketing emails have the potential to be marked as spam without a clear subject line. If systems automatically detect trigger words, such as an overuse of punctuation marks, your emails will have fewer chances of being opened by customers. By having an effective subject line, you can help ensure that your emails will be read.

4. Builds Brand Identity

While email subject lines are often just a concise sentence, they can help build your brand identity if you stick to a certain tone. This can increase the chances of customers immediately recognizing your emails and can therefore increase deliverability rates. 

The Top AI Email Subject Line Generators: A Quick Comparison Guide

For a quick overview of our most recommended AI-powered email subject line generators, here is a comparison guide of each tool:

Tool	Best For	Pricing(per month)	Key Features
HubSpot	✅Experienced marketers and large teams	✅Free ✅Marketing Hub Starter: Starts at $15 ✅Marketing Hub Professional: Starts at $800 ✅Marketing Hub Enterprise: Starts at $3,600	✅Email marketing ✅CRM integration ✅Social media management
Mailchimp	✅Small to large businesses	✅Free ✅Essentials: Starts at $13 ✅Standard: Starts at $20 ✅Premium: Starts at $350	✅Email marketing ✅Website builder
Brevo	✅Small to medium businesses	✅Free ✅Starter: Starts at $9 ✅Business: Starts at $18 ✅Enterprise: Custom pricing	✅Email marketing ✅SMS and WhatsApp marketing
PosterMyWall	✅Small business owners, social media managers, and marketers	✅Free ✅Premium: $9.95 ✅ Premium Plus: $29.95	✅Email marketing ✅Design tool ✅Social media management

Best AI-Powered Tools for Generating Email Subject Lines

Here are the top AI-powered software we recommend for generating efficient and effective email subject lines:

1. HubSpot

Overview

HubSpot is an online software that helps users with different needs, from marketing to sales management. While HubSpot offers different products depending on your required services, you can access the app’s AI email subject line generator using HubSpot’s Marketing Hub.

Email Subject Lines Generator

To use HubSpot’s AI writing tool, users simply have to input details into a pre-made template, which includes questions about what your marketing email is about, what you want your audience to know, and what you want your audience to do.  Additionally, users can also tailor the writing style or tone of the text. 

Why we recommend it

HubSpot is a useful tool for different business needs, and its email subject line generator is fairly easy to use. That said, users will better benefit from the tool if they also use HubSpot as their main email marketing tool. The downside is that the software can get a little pricey, with a much more complex interface when compared with other platforms. 

2. Mailchimp

Overview

Mailchimp is an email marketing and automation platform that assists users with creating email campaigns, automating tasks, and tracking business performance. While the platform does offer tools like an AI writer, its free email Subject Line Helper mainly assists with improving manually written text rather than actually generating it for you.

Email Subject Lines Generator

To use Mailchimp’s Subject Line Helper, users simply need to input manually written text in the subject field of their new email. Users are also given access to Mailchimp’s subject line guide for reference. When inputting text in the field, Mailchimp will automatically indicate whether the user has violated any subject line guidelines.

Why we recommend it

For businesses that are not interested in fully turning to AI for email marketing, Mailchimp’s Subject Line Helper may be a good option. While it cannot generate subject lines from scratch, it can assist with ensuring that your outputs are more likely to be read by customers. 

3. Brevo

Overview

Brevo is an online software that features various tools from CRM integrations to SMS, WhatsApp, and email marketing. The platform’s email subject line generator is available through the Brevo AI assistant, which is free to use regardless of your subscription plan.

Email Subject Lines Generator

Brevo’s Email Subject Line generator is similar to Mailchimp’s in that it does not automatically generate email subject lines from scratch. Instead, the user must input a descriptive text in the email subject field and click on the AI button to generate a suggestion. 

Why we recommend it

Brevo can be a great option for users who are simply looking for a writing assistant that can help enhance pre-written text. While it cannot generate work from scratch, users can still indicate certain commands to enhance the app’s suggestions for subject lines. 

4. PosterMyWall

Overview

PosterMyWall is an all-in-one social media marketing, management, and design tool that’s user-friendly for small businesses and marketers. Even for those without any experience with email marketing, PosterMyWall is an easy-to-use yet effective option. 

Email Subject Lines Generator

PosterMyWall’s AI Writer is a simple tool that can help users save time and generate more creative subject lines for marketing emails. To use the tool, users simply have to enter a short description prompt in the field, and the AI writer will automatically generate an effective subject line.

Additionally, users can also specify the tone they want to use, such as professional or emotional, and can choose a specific purpose, such as whether they want customers to generate interest or drive action. Lastly, users can also choose to include or exclude emojis depending on their preference.  

Why it’s our top recommendation

PosterMyWall is an all-around, hassle-free yet effective tool for different users regardless of their marketing experience. Because it is a very straightforward feature, PosterMyWall’s AI writer is a useful tool for saving time and generating more creative email subject lines.

Enhance Your Email Marketing Today

Email marketing can get a lot more complicated depending on your strategy, but certain AI tools can help make your life all the more hassle-free. With the help of AI-powered writing software such as PosterMyWall’s AI writer, you can easily generate email subject lines at a faster and more effective rate. 

So, get started with generating compelling subject lines today and enhance your email marketing strategy with ease. Good luck!