A/B test subject lines, content, and send time the right way

Guessing what works wastes sends. Test one variable at a time on a big enough sample, run a 4-week subject-line series, and log every result so winners compound.

Opinions about subject lines are cheap; tests are truth. But a test only means something if you change one variable, have enough recipients per arm to be significant, and log the result. AI designs the 4-week test calendar and computes the detectable lift from your list size; you run it in your ESP and record the winners.

Guessing which subject line wins wastes sends; a clean test settles it.

AI can design the 4-week test calendar and compute the lift your list size can actually detect. You run it in Klaviyo and log results, because the real numbers are yours.

What you'll learn

Change ONE variable per test
Check the sample is big enough, honestly
Test the highest-leverage thing first
Run a 4-week subject-line series
Log every result