Free A/B Split Testing Tool For Email Campaigns

What's the best day to send your email campaign? What's the best time of day? What subject line works best?

Instead of guessing what works, or sending a ton of campaigns over several months, you can run quick, automatic A/B tests with every single email campaign you send in MailChimp.

We've Made A/B Testing "MailChimp Easy."

You don't have to be a rocket scientist to run an A/B email experiment anymore. No need to setup randomized segments, send multiple campaigns, and constantly analyze piles of campaign data. We do it all for you. You just click our "A/B" button, specify a few criteria, and our patent-pending A/B tester handles the rest---automatically.

How It Works:
Let's say you want to test 2 different subject lines, to see if the word "free" gets more people to open your email. You simply enter subject line A and subject line B into MailChimp, then we send your campaign to two tiny "slices" of your email list:

Learn more about MailChimp's Free A/B Testing Tool

• A more detailed view of MailChimp's A/B testing process.
• A/B test case study: Does personalizing your subject line help or hurt?
• Free Trial: Try our A/B tester with your email campaign today

Other A/B Split Resources:

• How to use A/B Split Testing to Increase Conversion Rates MarketingExperiments.com
• With A/B Testing, You don't think-you know - Jeff Campbell, Resolution Media
• How to Improve A/B Testing - Bryan Eisenberg
• Subject Line Testing Scenarios - A handful of very quick, easy subject line a/b tests you can run right now.
• Email Marketing Needs A/B Testing: A fan of ConstantContact.com discusses the need for A/B testing
• The Most Important E-Mail Marketing Tactic of All: Bill Nussey of Silverpop discusses why A/B testing your email marketing is so important, and gives some suggestions on what to test.
• Testing and Email Marketing: A list of resources about testing your email marketing campaigns
• 10 Quick Wins for Email Marketing: #7 - Testing (tips from iMedia Connection)
• Incorporate Testing Into Your Game Plan: Blog post from David Baker at MediaPost
• 1/3 Opens Occur in First Hour: When you send an A/B test, how long should you wait to check stats?

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