1 of 1 people found this helpful
You can create an Email Performance Report with the smart list edited for each segment. Focus on open rates to designate subject line performance. Might have to export a separate report for each segment and compile the results in Excel.
If you have RCE, you can build this out in one report, but if this is a one-time thing it would be simpler to keep it in MA.
Awesome, thank you Rachel!