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A/B Subject Line Testing

A/B subject line testing is a great way to optimize the performance of your email campaign. iPost’s A/B subject line testing feature allows you to create different subject lines and track which line performs better.

Using A/B Subject Line Testing on an Email Send

Once you've reached the Email Send Configuration page,

  1. Check Make Segments for Subject Testing option under the Description field. This will populate a third tab at the top of the Configure Email window.
  2. Complete the remaining items in this section, add your audience list(s) and/or table(s), and adjust any advanced options. Click Next.
  3. Use the following options to format the subjects for testing:
    1. To add a Subject Line, click the + icon found to the right of the Subject Line text box. The minimum number of Subject Lines for testing is 2.
    2. To remove a Subject Line, click the - icon located above the plus sign in the text box.
    3. To add personalized attributes to a Subject Line, click the wand icon and select the attribute from your All Contacts database.
  4. Choose the Measurement Interval and Distribution percentage. The table below describes each of these Automated Subject Testing Options.

 

    Option Description
    Measurement Interval The amount of time the system will wait before automatically sending the better performing version to the remainder of your contacts.

    The winning version is determined by Response Rate, which is the combined Open and Click performance.
    Distribution Select the percentage of your audience that you would like to send the A/B subject line test.

    The system randomly selects which subscribers receive the test subject lines.

    A Winner segment is required when using Subject Line Testing. If you want to perform a test without a Winner Segment, split the intended audience into two segments and send separate email versions.

    Reporting for emails where A/B Subject Line testing is enabled can be found in the A/B Test Sends section of Reports.