SUBJECT LINE TESTING, DONE RIGHT
Send several versions. Let the whole empire decide which wins.
Every campaign can launch with several designed variants, rotated evenly across your whole list, not a sample. You see what real people clicked, and you pick the winner.
Variants rotate across your whole list
Human opens counted separately from bots
You choose the winner, never a script
WHY MOST TESTING LIES TO YOU
The fastest opener isn't always the real winner.
Most A/B testing works like this: you pick two subject lines, send both to a tiny slice of your list, wait an hour, and whichever one gets opened first gets declared the winner. The rest of your audience, the hundreds or thousands of people you haven't reached yet, gets whatever won that early little race.
The trouble is that first race is rigged before it starts. Security scanners and spam filters open mail within seconds, long before a real person glances at their inbox. If your 'winning' subject line just happened to get scanned fastest, you've crowned a robot, not a customer.
So you send the rest of your list on the strength of noise. The version that might have actually earned replies, bookings or sales never gets its fair shot, because the test called it quits before a single human weighed in.
HOW CREATIVE VARIANTS WORK
Built to test fairly, from the first send.
No separate test stage, no small sample to wait on. Every variant goes to your whole list, and you read real results before anyone's crowned a winner.
Design your variants
Build two or more versions of the same campaign in the editor: different subject lines, opening lines, offers or full layouts.
Launch to everyone at once
Variants rotate evenly across your entire audience from the first send. No small sample, no separate test stage.
Watch results per variant
Opens and clicks are reported for each version on its own, with human opens kept apart from automated ones.
Choose your winner
Read the full results on your own timeline, then pick the version that goes down as the one that worked.
IN DETAIL
Fair testing, built into every send.
Three things happen every time a campaign goes out with variants: it's built to be different, it's sent to be fair, and it's reported so you can actually decide.
DESIGN
Several designed variants, every campaign.
A campaign doesn't have to leave with one face. Launch it with several designed variants: different subject lines, different opening lines, different offers, or layouts built differently from top to bottom.
Each variant is a full design, built in the same editor as the rest of your campaign, so you're testing real creative decisions, not just swapping one word in a subject line and hoping.
Different subject lines or openers
Different offers, side by side
Different layouts, fully designed
DELIVERY
Even rotation, across your whole audience.
Every variant rotates across your whole audience at once, in even shares. There's no small sample sent first and no waiting on a handful of early opens to decide anything.
Because the test runs at full size from the start, the result reflects your actual list, not a guess about it. It also means your campaign reaches inboxes looking like several distinct emails instead of one identical blast, which providers notice too.
Full audience, every time
Even split across variants
No separate sample stage
RESULTS
Per-variant results, and you pick the winner.
Results come back broken down by variant: opens and clicks for each version, reported on its own instead of lumped into one average.
Human opens are kept separate from automated ones, so a scanner opening your mail early never gets mistaken for a customer. Nothing is crowned automatically; you read the numbers and choose the winner, whenever you're ready.
Opens and clicks per variant
Human opens kept apart from automated
No automatic winner, ever
Decide on your own schedule
WHAT THIS MEANS FOR YOU
Stop guessing. Start knowing.
Four ways a fair test changes what actually happens to your next campaign.
Real creative choices, tested
Try different subject lines, openers, offers or layouts on the same campaign, not just one lonely tweak.
Every test is full-size
Variants rotate across your whole audience at once, so results reflect everyone, not a hopeful handful.
Human opens, not scanner noise
Automated opens are reported apart from real ones, so a security scanner never gets to crown your subject line.
You call the winner
Nothing is decided for you on early numbers. Read the results, then pick the version that goes out again.
Inboxes see variety, not a blast
Different versions reaching different inboxes look less like one identical mailing to the providers reading it.
COMPARED
A fair test isn't a rushed one.
A typical test rushes a verdict. Here's what changes when the whole audience gets a vote.
A typical A/B test
- Tests a small sample first, then guesses for the rest.
- Crowns a winner within the hour, from whoever opened fastest.
- Counts every open, bots included.
- One subject line swap, same email underneath.
- One identical blast lands in every inbox at once.
Kadexin
- Full audience. Every variant rotates across everyone, every time.
- You decide. Results sit until you choose the winner yourself.
- Human opens only. Automated opens are reported separately.
- Whole variants. Different subject lines, openers, offers or layouts.
- Natural variety. Several versions reach providers, not one lookalike email.
CREATIVE VARIANTS, ANSWERED
Questions about creative variants.
Is this the same as A/B testing?
It's a fairer version of it: every variant goes to an even share of your whole audience, and results count people, not scanners.
How many variants can one campaign have?
Launch a campaign with several designed variants at once: different subject lines, openings, offers or layouts. Build as many as the test calls for, all in the same editor.
Do you need to pick a sample size?
No. Variants rotate across your entire audience from the first send, so there's no separate sample stage to size or wait on.
What counts as a human open?
Every open is classified. The ones that arrive the way software opens mail are counted as automated; the rest count as human, in their own column.
When does a winner get picked?
Whenever you say so. Nothing is crowned automatically on early or noisy numbers, you read the per-variant results and choose.
Does sending variants help with deliverability too?
Yes. Sending several designed versions keeps your campaign from looking like one identical blast to inbox providers, which works in your favor beyond the test itself.
Can I test more than subject lines?
Yes. Variants can differ by opening line, offer or full layout, not only the subject line, so you're testing real creative decisions.
Does this use the same credits as a normal send?
Sending any variant uses one credit per email, the same pool that covers every campaign, address check and AI write.
WORKS WITH
Built to work with the rest of your campaign.
Creative variants work best alongside the rest of the toolkit.
AI email design
Every variant still needs designing before it can be tested. Start from a one-line brief and get a complete, on-brand email, hero, offer band, proof and footer, ready to send as one of your variants.
Honest reporting
See opens and clicks for every variant, with human results kept apart from automated ones.
See honest reportingEvery address checked
Verified addresses mean cleaner data behind every variant's results, not dead mailboxes skewing the count.
See address verificationSending domains, handled
Every variant sends from your own domain, authenticated and set up for you, so each version looks like it's really from you.
See sending domains
Give every campaign its fairest fight.
Create your account and launch your first set of variants today.
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