A fix has been implemented and we are monitoring the results.
Posted Nov 13, 2025 - 14:58 EST
Update
Just a status update: the issue is that an AB test actually contains multiple newsletter campaigns - variant A, variant B, and "everyone else." We have a calculation error (on the display side, not the tracking side) in which those metrics just aren't rolling-up under certain conditions. Thank you for your patience.
Posted Nov 13, 2025 - 12:20 EST
Identified
For people sending AB Tests, we have identified an edge case where the "delivered" metric in your newsletter edition report is either too high or too low. This is a display calculation bug and ostensibly affects only the display. The numbers under the hood remain sound. We are working on a patch. Thanks for your patience.