Give any cold-sequence step up to four versions, watch reply rate per version, and promote the winner once you have enough data
Up to four versions of a step
Test subject lines or bodies against each other.
A/B testing lets you give any step in a cold sequence more than one version, up to four (A, B, C, and D), each with a different subject line or body. Laureo splits your leads evenly across the active versions and reports how each one is doing, so you can keep the version that earns the most replies. It is an Ultra capability, built into the sequence builder.
Each lead stays on one version
A lead is assigned one version the first time that step sends to them and keeps it for the rest of the thread. A follow-up always reads as one consistent conversation — a lead never sees version A on one step and version B on the next.
Add a test to a step
From the step in the builder.
1
Open the sequence and pick a step
In the builder, find the step you want to test. Below the step card, choose "Add A/B variant".
2
Version A starts from your current copy
Version A is seeded with the step’s existing subject and body so you keep what you already wrote. Version B starts blank for your challenger.
3
Write the challenger and save
Edit version B’s subject and body, then choose "Save variants". Every version uses the same personalization variables, spintax, unsubscribe footer, and postal address as a normal step.
4
Add more versions if you want
Choose "Add variant" to append version C, then D, up to four versions in all. Each new version starts blank for you to write. Remove the test to go back to a single version.
Watch the results
Reply rate, per version, from exact counts.
Once the sequence is live, each version shows exact counts: how many sends it has, how many replies it earned, and the reply rate, plus how many opened and how many clicked. Cold outreach is judged on replies, not opens, so reply rate is the number the builder puts front and centre. The counts are exact, not estimates, so the comparison is trustworthy.
Opens and clicks need a verified tracking domain
The open and click columns only fill in when you have verified a tracking domain and turned on open or click tracking for the sequence. Without that, and on plain-text-only sends, they stay at zero. Reply rate is always exact, because replies are detected regardless of tracking, so judge the test on reply rate.
Promote the winner
Once each version has enough data.
A minimum sample is required. The Promote control stays disabled until every version has at least 250 sends. An under-sent version cannot tell you it is a loser, so all of them, whether two, three, or four, must reach that floor first.
You choose the winner. The builder highlights the version with the highest reply rate once every version passes 1,000 sends, the point at which a reply-rate difference is trustworthy. Below that it stays quiet and shows a small-sample note, but the decision is always yours: promotion is a manual click, never automatic.
Underperformers are flagged, not retired.Once versions clear the 1,000-send confident floor, one that falls well behind the leader picks up a muted “Underperforming” hint. It is a suggestion only. Nothing is deactivated for you; you still promote the winner by hand.
The other versions stop. When you promote a winner, the rest are deactivated and every future send of that step uses the winner. To run a fresh test, remove the A/B test and add a new one.
Give a test room to breathe
Cold reply rates are low, so a version needs a meaningful number of sends before a difference means anything. You can promote by hand once every version passes 250 sends, but the builder only calls a winner once every version passes 1,000, the point where the reply-rate difference is trustworthy. Resist promoting on the first few replies, and lean on the 1,000-send read before you decide.