Open up your Email Campaign that you are running or have already run. Under the Email Campaign Info box, you should see a link - Reports for this Email Campaign. This is where you can find more information on the report.

1. In the EXM navigation menu, click Messages, and then In Progress Messages - or under Reports, click Active A/B messages. 2. In the list of messages, click the relevant message name to open the message. 3. Click the Delivery tab of the message and scroll to the Select A/B winner section to see the results of the A/B test so far. Each variant is listed with the current statistics: • Open rate - the percentage of recipients that have opened the message. • Click rate - the percentage of recipients that have clicked a link in the message. • Value - the number of engagement value points that the recipients have generated on the website after opening the message. If you need more detailed information on the A/B test results, click the Reports tab where you can see more about recipient behavior and message performance.

In this demo, Sitecore 8.1 was used. I hope that helps :)