I'm trying to retrieve a list of campaigns. One recent campaign is an A/B test. It doesn't show up in the /v3/emails list. I searched around in the archives and saw a message from a few years ago about the v2 api, but nothing concrete on v3. Reporting is tricky when some campaigns are left out...
Thank you for reaching out to Constant Contact's API Support.
A/B campaigns are a different type of campaign that is not currently included in the v3 API. It is on the schedule to be included; however I do not have a timeframe I can provide yet. It is one of our higher priorities as far as new reporting endpoints though.