A/B split test, Digital Marketing, digital mkt, email list, Email Marketing, email outreach, email split test, Internet marketing, Online Marketing, split test, split testing, subject line split test
Split Test Subject Lines to Maximize Open Rates
By Kelly Forst April 20, 2021
Morning Brew reached 1,000,000 opens with this split testing strategy. Plus, learn how you can do it in AWeber.
Stuck between two subject line ideas?
It’s impossible to know which will yield the best results without running a split test — commonly called an A/B test. A split test gives you real feedback on which subject line your audience was more drawn to opening.
This is how the most successful marketers optimize their open rates.
Take Morning Brew, for example. Morning Brew is a popular newsletter with more than 2.5 million subscribers. Their daily newsletter includes business and tech news of the day written for a business-minded millennial audience.
In August 2020, Morning Brew hit a major milestone — 1,000,000 opens of its...


