A/B Testing Handbook for Email
What to test, how to test it, and how to actually learn from results.
- Testing rules for valid results
- 10-item priority testing roadmap
- Test documentation template
- Statistical significance explained simply
- Delivery
- Instant download
What happens after you order
Two steps. That is the whole process.
- 1
Enter your email
No credit card, no trial, nothing to cancel.
- 2
The PDF lands in your inbox
Delivered instantly as an attachment, check spam or Promotions if it is not there in a minute.
What It Is
Most email A/B tests are run wrong, sample sizes too small to be statistically meaningful, multiple variables changed at once, or test windows too short to reach significance. The result looks like data but isn't.
This handbook covers the methodology for running valid tests: 5 rules for valid testing, a priority testing matrix so you know what to test first, a subject line test framework, and an offer testing guide.
A test documentation template is included so every test you run builds into a learning library instead of disappearing the moment the next campaign goes out.
Who It's For
- You've run A/B tests before but were never confident the results were statistically valid
- You're not sure what to test first: subject lines, send time, offer, or something else
- You want a documentation system so past test results are searchable, not forgotten
- You're setting up your first test and want the methodology right from the start
Probably not for you if
- You want a test actually configured and set up in your ESP. See A/B Test Setup & Configuration in the Setup category
- You just want subject line ideas to test, not testing methodology, the free 50 Subject Line Formulas That Convert covers that
What's Included
How It Works
Enter your email
No card, no call required, just your email address.
Get instant delivery
The handbook arrives as a PDF in your inbox within seconds.
Run your first valid test
Use the priority matrix to pick what to test first, then follow the 5 validity rules and documentation template to run and record it.
Typical delivery: Instant download
What We Need From You to Get Started
Have these ready and we can kick off immediately. No back-and-forth delays.
- Just your email address: that's it
- No credit card required
- A rough sense of your list size, to check it against minimum sample size guidance
Frequently Asked Questions
Yes, the A/B Testing Handbook for Email is completely free with no credit card required. Enter your email and it arrives instantly.
A PDF, emailed instantly, covering 5 rules for valid testing, a priority testing matrix, a subject line test framework, an offer testing guide, and a test documentation template.
The handbook covers minimum sample size guidance as part of the 5 validity rules, very small lists may need to test over multiple sends to reach a meaningful result, which the guide explains how to handle.
The priority testing matrix ranks common tests (subject line, send time, offer, layout) by expected impact and ease of running, so you can start with the highest-leverage test rather than a random one.
Yes, the methodology applies to the native A/B testing tools in Klaviyo, Mailchimp, Omnisend and the rest, and works just as well for manual splits. For help getting a specific test configured, see A/B Test Setup & Configuration in the Setup category.
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Email A/B Testing and Statistical Significance: When Your Results Are Real
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WHO BUILDS THIS
Delivered by Ravinderpal Singh's team
Ravinder founded Excelohunt. For 7+ years he has worked on one thing: making email the channel that earns the most for online stores. He wrote Customer Retention Strategies. His Klaviyo Partner team builds every order placed here.
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