Use “Subject Line” A/B Testing use-subject-line-a-b-testing

You can easily A/B test your emails. One of the most common tests is the Subject Line test.

PREREQUISITES
Add an A/B Test
  1. Under the Email tile, with your email selected, click Add A/B Test.

  1. The test editor window will open. Enter one or more new subject lines.

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    NOTE
    Choice A will pre-populate with the information contained in the selected email.

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    TIP
    You can click on the + to add more subject lines.
  2. Use the slider to choose what percentage of the audience you want to receive your A/B test and click Next.

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    CAUTION
    We recommend you avoid setting the sample size to 100%. If you’re using a static list, setting the sample size to 100% would send the email to everyone in the audience and the winner would go to no one. If you’re using a smart list, setting the sample size to 100% would send the email to everyone in the audience at that time. And when the email program runs again at a later date, any new people who qualify for the smart list would also receive the email since they are now included in the audience.
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    NOTE
    The different subject variations will take even parts of the Test Sample Size selected.

    Okay, we’re almost there. Now we need to define the A/B test winner criteria.

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