Test the subject line, keep the one that gets replies
Add variants to any step. Super Intelligent Sender splits leads evenly between them and shows the results side by side.

How does A/B testing work in Super Intelligent Sender?
Open a step in a campaign and add variants A, B, C and so on, each with its own subject and body and the same merge tags. Super Intelligent Sender splits the step's leads evenly between the variants, and each lead keeps the same variant every time the email is rendered. The campaign shows opens and replies for each variant, and you decide which copy to keep.
Variants on any step
Test the opener, a follow-up or both. Each variant has its own subject and body.
AI drafts two for you
Ask AI for two alternative versions of a step, then edit them like any other variant.
Even, stable split
Leads are spread evenly across variants, and a lead never flips between versions.
Results per variant
Open and reply rates for each variant, next to each other on the campaign.
Preview every variant
See exactly what a sample lead receives for each version before you launch.
You pick the winner
Super Intelligent Sender never switches copy on its own; you keep or remove variants when you have seen enough.
See it in the product
Frequently asked questions
How does A/B testing work in Super Intelligent Sender?
Open a step in a campaign and add variants A, B, C and so on, each with its own subject and body and the same merge tags. Super Intelligent Sender splits the step's leads evenly between the variants, and each lead keeps the same variant every time the email is rendered. The campaign shows opens and replies for each variant, and you decide which copy to keep.
How many variants can a step have?
As many as you add. Leads are split evenly between them, so more variants means fewer leads per variant and slower answers.
Does Super Intelligent Sender show click rates per variant?
The campaign compares opens and replies per variant. Clicks are recorded on each lead's timeline.
Related features
Sequences & A/B tests
Write the opener and follow-ups once. Super Intelligent Sender personalises each one and keeps follow-ups on the same thread.
Learn more →AI writing
Rewrite a step, draft variants or add a personal opening line for each lead, without leaving the campaign.
Learn more →Dashboard & insights
One screen with today's sends, replies and hot leads, and the next moves worth making.
Learn more →See Super Intelligent Sender with your own sending setup
Book a short demo. We will connect a mailbox, check your timing and walk through replies and the pipeline with you.
- 20-minute call
- On your own mailboxes
- Reply within one business day