Hi Dan, I actually went ahead and tried to attach all 16 email versions to the A/B test. When doing the Whole Email test, you need to click "Add" to attach the whole email before it opens another Variation field to add assets. I reached the limit once I added 10 versions. 10 is the limit to A/B Whole Email testing. Craig ... View more

Hi Dan, Thanks for the quick reply. The size is not particularly large: 46,600. I understand that 16 versions is quite a lot. I didn't plan this test, just trying to make sure that it will work as requested and to mitigate any technical problems that we may encounter before we send. Thanks again for any additional advice on technical concerns. Craig ... View more