A/B testing is the secret weapon of high-performing email marketers. By systematically testing variations, you can optimize every element of your campaigns.
What is Email A/B Testing?
A/B testing involves sending two variations of an email to a small portion of your list, measuring performance, then sending the winner to the rest.
What to Test
- Subject lines – Length, personalization, urgency, questions vs statements
- Send time – Day of week, time of day, timezone optimization
- Content – CTA button text/color, images, copy length
- From name – Personal name vs company name
Best Practices
- Test one variable at a time
- Use significant sample size (1,000+ per variation)
- Wait for statistical significance
- Document and iterate on learnings
Conclusion
A/B testing transforms guessing into knowing. Start with subject lines, then expand to more complex tests.