--- title: "A/B tests: SmartyTap docs | Chargezen" description: "Test up to seven versions of a SmartyTap email or text, pick the winner by open, click or placed order rate, and send it to everyone else." url: "https://chargezen.com/docs/smartytap/campaigns/ab-tests" lang: "en" updated: "2026-10-19" --- Canonical URL: https://chargezen.com/docs/smartytap/campaigns/ab-tests # A/B tests Test up to seven versions of a SmartyTap email or text, pick the winner by open, click or placed order rate, and send it to everyone else. Last updated: 2026-10-19 Every campaign is a chance to learn what your customers answer. An A/B test sends different versions of a message to a small test group, waits, and sends the version that did best to everyone else. The next campaign starts from what worked, not from a guess. ## Test an email 1 #### Open the setup Select the email in your campaign, open **Campaign setup** and, under **A/B test**, click **Create A/B test**. 2 #### Add versions Click **Add version**, give it a **Version name**, and use **Editing** to switch between versions. Each version is a full email, so you can change the subject line, preview text or content. You can have up to seven. 3 #### Set the test Choose the **Test size**, what to **Pick the winner by**, and the **Test length (hours)**, as described below. 4 #### Schedule Review and schedule the campaign as usual. The message shows **A/B test running** while the test runs. ## Test a text In the SMS composer, click **Create A/B test**, then **Duplicate variation** and change the wording. The test settings are the same as for email. ## Test settings | Setting | What it does | Starts at | | --- | --- | --- | | Test size | The share of the audience that gets a version during the test, from 10% to 100%. The rest get the winner. | 20% | | Pick the winner by | Open rate, Click rate or Placed order rate for email. Texts use Placed order rate. | You choose | | Test length (hours) | How long to wait before picking, from 1 to 72 hours. | 6 hours for opens and clicks, 24 for orders | Which winner to pick by Testing subject lines? Use open rate. Testing the content or offer? Use click rate, or placed order rate if you have enough orders to tell versions apart. Placed order rate counts people who ordered after getting a version; it isn't revenue. Click rate needs **Track link clicks** turned on. ## How the winner is sent * When the test length is up, the best version goes to everyone who wasn't in the test. People waiting show as **Waiting for test results**. * If the results tie, Version A goes to everyone else. * To decide early, open **Campaign performance**, find **A/B test results** and click **Send this version to everyone else** on the version you want. Choose **Keep testing** to change your mind. * With a test size of 100%, everyone gets one of the versions and no winner is sent. Use it to compare versions across the whole audience. Tests and local time A test that picks a winner sends at one time, so **Each recipient's timezone** is turned off for it. Choose a specific time zone, or set the test size to 100% to split versions and still send in each recipient's local time. ## FAQ ### Can I test several things at once? Each version can differ in as many ways as you like, but SmartyTap compares whole versions. It doesn't run multivariate tests that measure each change separately, so change one thing at a time if you want to know what made the difference. ### How big should the test be? Big enough that each version reaches a few hundred people. With a small list, a larger test size or a 100% split teaches you more. ### Will anyone get two versions? No. People in the test group get one version, and only people outside the test get the winner. Messages from the same campaign also don't count toward Smart Sending. ## Related **Guides** * [Create a campaign](https://chargezen.com/docs/smartytap/campaigns/create-a-campaign) * [Reports and revenue](https://chargezen.com/docs/smartytap/reports) **On the product page** * [Campaigns with an automatic A/B winner](https://chargezen.com/smartytap/campaigns) ### Related Articles [ #### Create a campaign Where the test lives ](https://chargezen.com/docs/smartytap/campaigns/create-a-campaign)[ #### Reports and revenue Read the results ](https://chargezen.com/docs/smartytap/reports)[ #### Local-time sending How tests and time zones fit together ](https://chargezen.com/docs/smartytap/campaigns/local-time-sending) Was this page helpful? Need more help? [Contact support](https://chargezen.com/docs/checkoutos/troubleshooting/support)