Question: What does it mean to a/b test a subject line?

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It is easy to compare how effective a subject line is by A/B testing two or more different subject lines. LianaMailer sends 10 % of the recipients on a list (or lists) a test batch of messages with the different subject lines and after a defined time the version that got a better open rate will be sent to the rest of the list.


Click the green plus sign next to the subject line and write the subject lines you want to compare in the fields.

At the delivery stage you can choose the A/B testing waiting period within which test batch open rates will be compared before the main delivery.


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