Best 9 Email Subject Line Tester Tools You Can Use
In this article, you’ll find out which are the best email subject line tester tools you should be using.
We’ll talk about tools to test your subject line based on:
- Engagement
- Mobile and Desktop visibility
- Spam Score
- Deliverability
- Readability
If you want to test your subject lines, you’ll find your next favorite tester below.
What is a Subject Line and Why is It Important?
A Subject Line is the topic of your email. It acts as an introduction to your email that lets the readers know what to expect. The subject line is the first thing your readers will see when the email lands in their inbox, and it should entice the reader to open the email.
So, how important is your subject line?
Extremely.
35% of users will open an email based on the subject line alone, and 69% of emails are sent to spam based exclusively in the subject line.
For anyone with a properly built email marketing campaign, a subject line is often the only factor between an email being opened or the sender being marked as spam, forever.
If you want to get opens and engaged users, you need to test your email and make sure your subject line is the best it can be.
Best Email Subject Line Tester Tools
Here are some of the best email subject line tester tools you can find:
Test Subject – Zurb
TestSubject is a simple and free online tool made by Zurb to show you how your subject line, sender name, and pre-header text will look to your readers.
Just copy and paste the text you want to test, and this tool will immediately show you how it’ll all look on the most popular email clients and mobile devices. This is a great tool to visualize your customer experience when interacting with your emails, so you know exactly how much they’re reading.
Price: Free
Mizy – Automizy
Powered by the acclaimed Automizy’s AI, Mizy is another free email subject line tester. It tests your subject line against all emails that were sent from Automizy’s platform, so it can predict how well your subject line will do.
Once you enter your subject line, it’ll rate it from 0 to 100, giving you tips on how to improve your subject line to maximize your open rate. This tool is perfect if you’re looking for an analyzer tool that tests your subject lines not based on a to-do formula, but on actual, real campaign performance.
Price: Free
Headline Analyzer – CoSchedule
The Headline Analyzer by CoSchedule tests your subject line based on your keywords, word balance, sentiment, and effectiveness. It’s a great tool to get an overall subject line ranking, although you will have to fill up your information before you get any results.
Price: Free
Spam Check – Postmark
If you’re having a large amount of emails being sent to spam, you should definitely use a spam tester, like Postmark’s Spam Check. Spam Check tests not only your subject line, but your whole email to see how likely your message is to be categorized as spam by email servers.
Price: Free
Emotional Marketing Value Headline Analyzer
EMV stands for Emotional Marketing Value. EMV words make up 20% of the English language and appeal to the emotional and empathetic side of the brain. The EMV headline analyzer tests your subject line to find out its EMV score. With it, you can establish a deeper, emotional connection with your reader to get them to open the email and check what’s inside.
Price: Free
Touchstone
Touchstone is an online subject line tester used to predict the impression and click and conversion rates based on your headline. This high-end tool is not for everyone.
Price: Essential, $69; Expert, $99; Enterprise, $297. Free trial available.
Email Subject Line Tester – Send Check It
The Email Subject Line Tester by Send Check It is a free and simple online headline tester. It tests your subject lines against over a dozen principles, showing you previews of your headline, and giving you an overall score.
Price: Free after registration.
IS Not Spam
Is Not Spam tests your email’s likelihood of triggering spam filters by having you actually send your email to them. This is a great tool to use if your deliverability has been going down.
Price: Free
Hemingway App
The Hemingway App tests the readability of your headline and content to help you make your email as easy to read and scan as possible.
Price: Free
Conclusion
Your subject line can make the difference between your users clicking and reading through your email, and your users never even receiving your email to begin with. With these tools, you’ll be able to avoid spam filters, cut out texts, and boring headlines. Start using them to write the best email subject lines today.
About Will Cannon: Previously known as the entrepreneur behind the lead generation company BWG, finding leads for companies like Dropbox, Morgan Stanley, ADP, and many other Fortune 500 companies. Will Cannon is currently the founder and CEO of UpLead.