👋🏻 Introduction
❓ Based on the [subject line A], what do you think the purpose of the email is?
Multi Select
❓ Based on the [subject line A], how likely would you open the email?
Numerical Scale
❓ Based on the [subject line A], what content do you expect to see?
Text
❓ Based on the [subject line B], what do you think the purpose of the email is?
Multi Select
❓ Based on the [subject line B], how likely would you open the email?
Numerical Scale
❓ Based on the [subject line B], what content do you expect to see?
Text
❓ Of the two subject lines, which do you prefer more?
Image Preference
👋🏻 Thank you
Copy testing

A/B Test variations of email subject lines

How catchy is your marketing email subject lines? Compare and test email subject lines to get a general sentiment and resonance from your audience.

Study objectives

  • Evaluate which subject line variations lead to higher open rates, helping to optimize email campaign performance and increase engagement.
  • Determine which subject lines are most effective in encouraging recipients to open the email and click through to the content or call-to-action (CTA) inside.
  • Gain insights into the preferences and behavior of the target audience by analyzing their responses to different subject line variations. Moreover, inform future email marketing strategies and content planning.
  • Refine audience segmentation by analyzing how different segments respond to various subject line strategies. Tailor email campaigns more effectively to specific audience preferences and characteristics.

Test multiple email subject lines with A/B testing

Craft catchy subject lines to increase visibility of your email content

Getting started

1

Create an account and log in to your Hubble account.

2

Find and select the template to use.

3

Edit the questions as you see fit.

4

Run pilot tests with internal users (ideally, people that are not a part of your project).

5

Preview the study and check if you need to make any last minute changes.

6

Publish the study and wait for the results to come in.

Frequently Asked Questions

Why should I A/B test email subject lines?

A/B testing allows experimenting with email marketing with different subject line variations to identify the most effective ones for engaging recipients and driving desired actions, such as opening the email or clicking on links.

What are some elements of email subject lines that can be tested?

Elements of email subject lines that can be tested include length, tone, personalization, urgency, relevance, punctuation, emoji usage, and different types of hooks or call-to-action phrases.

What metrics are typically measured in A/B testing for email subject lines?

The primary metrics measured in A/B testing for email subject lines include open rates, click-through rates, conversion rates, and overall engagement metrics. These metrics provide insights into which subject line variation resonates most with recipients.

What are some best practices for A/B testing email subject lines?

Best practices include testing only one variable at a time, ensuring randomization of test segments, setting clear goals and hypotheses, analyzing results statistically, and iterating based on findings to continuously improve email performance.

Other Study Templates

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Have users evaluate content on a live website

Task with fill-in-the-blank to gauge content clarity

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Test multiple email subject lines with A/B testing

Craft catchy subject lines to increase visibility of your email content