Hello @L01955 ,
Currently, Subject AB emails do not have Resend options, even if they're cancelled in the middle of calculations. Normally I'd recommend creating a segment based on contact activity (did not open) and list membership, but to accomplish this setup you'd need to be on the Premium plan. As an alternative, here's the steps I recommend:
Go into the list you originally sent to. Select-all by clicking the top-most checkmark box.
Actions > Add to list > Create List > call it something obvious like "Resend of [email name]"
Go to your cancelled Subject AB email's reporting page. Go into the A subject line's open report. Select-all by clicking the top-most checkmark box.
Actions > Add to list > Create List > call it something obvious like "Opens of [email name]"
Go into the B subject line's open report. Select-all by clicking the top-most checkmark box. Add them to the "Opens of" list
Go to your Contacts > Lists. Enter the "Opens of" list, select-all
Actions > Remove from list > select the "Resend of" list. Once confirmed, this will cause all the combined Openers of your cancelled Subject AB from the list you'll be using for the pseudo Resend-to-Non-Openers copy of the email.
Go to your Campaigns, copy the email, make the subject line changes and other edits desired. Schedule the email to the "Resend of" list.
For visual and step-by-step guidance on these processes, I'd recommend referencing these articles:
Did Not Open Reporting
Removing contacts from lists
Subject AB results
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