Glossary
Multivariate testing
Testing several elements at once, such as a subject, an image and a button, to see which combination works best.
ValidReach Team · Updated 2026-10-26
In practice
It needs a large audience, because every combination needs enough recipients to read a result. A simple A/B test is the better choice for smaller lists.
Verification and sending
Invalid addresses waste test recipients. Verify first so each cell is made of real inboxes.