Fullscreen quiz popup with mystery discount: signups 1.36% to 16.67%
Test run byOptiMonkTesting and CRO tool
Commentary byLiftArchiveOur analysis, not theirsA fullscreen, multi-step popup with a mystery discount lifted CraftMystic's email sign-up rate from 1.36% to 16.67% in a three-week A/B test.
OptiMonk ran it for the crystal and spiritual goods store and published it as a case study.
Many things changed at once, including the popup tool, size, offer and flow, so the result belongs to the whole package.
- Email sign-up rate: 1.36% to 16.67%, reported as +1,125%.
- Order conversion: 1.75% to 1.82%, about +4%. This gap is small and no significance is given, so treat it as uncertain.
- The test ran for three weeks. Sample size is not shared.
The change
A small form becomes a fullscreen, step-by-step quiz with a mystery discount.
Simplified mockup drawn by LiftArchive from the shared screenshots.
Control
A basic sign-up popup from another tool, theMarketer, with two fields and a dropdown asking for the visitor's zodiac sign.
Variant
A fullscreen popup in steps: pick your zodiac sign, enter your email for a mystery discount, then see personalized product picks. It showed on the homepage to non-subscribers after 5 seconds, at most twice.
Why it likely won
Our reading of the result, not the practitioner's claim.
- Asking one thing per step feels lighter than a form with several fields.
- A mystery discount adds curiosity, which gives people a reason to finish.
- A fullscreen popup is hard to miss, unlike a small form.
- Starting with the zodiac question fits this audience, so the first click feels like fun, not work.
Caveats: This was a bundled change: the tool, size, offer and flow all changed together, so no single element can take credit. Results are vendor-reported, with no sample size or confidence level shared.
Who ran it
OptiMonk ran this test for CraftMystic and published the results (OptiMonk case study). The numbers are theirs; the summary and commentary on this page are ours.
Read the original case study on OptiMonk →
How to run this test on your store
- Hypothesis
- If we replace a basic sign-up form with a fullscreen, step-by-step popup that opens with an easy question and offers a mystery discount, then email sign-ups will rise because each step asks for little and curiosity pulls visitors through.
- Primary metric
- Email sign-up rate
- Guardrails
- Order conversion rate
- Homepage bounce rate
- Discount cost per order
- Who should test it
- Stores with a niche audience and a fun question to open with, like style, skin type or zodiac sign. If your list is already growing well, or a fullscreen popup clashes with your brand, test a smaller format first.
Questions
Do fullscreen popups get more sign-ups?
They are harder to miss, and here a fullscreen multi-step popup beat a small form by a wide margin.
But size was only one of several changes, so this test can't show how much size alone mattered.
What is a mystery discount popup?
It promises a discount without saying the amount until the visitor signs up.
The curiosity can push more people to finish the form.
Does a better sign-up popup increase sales?
Not always by much. Here sign-ups jumped more than tenfold while order conversion rose only about 4%.
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