The mailings to contacts in both groups are alternately sent. First, an email to a contact in group A, then an email to a contact in group B, etc.. This way provides a most honest and representative outcome of the test.
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The mailings to contacts in both groups are alternately sent. First, an email to a contact in group A, then an email to a contact in group B, etc.. This way provides a most honest and representative outcome of the test.