# Filter offer on thank-you page instead of email: ~30% attach rate

- Outcome: Won
- Page type: Post-purchase (Ecommerce)
- Elements: Upsells & cross-sells
- Test run by: [Mouvair](https://liftarchive.com/practitioners/mouvair/)
- Commentary by: LiftArchive (our analysis, not theirs)
- Original source: https://upsell.com/case-studies/how-mouvair-replaced-emails-and-won-60-more-upsell-revenue
- Page: https://liftarchive.com/test/gap-mouvair-filter-upsell-vs-email/

Mouvair moved its replacement-filter offer from follow-up emails to a one-click offer on the thank-you page, and about 30% of air purifier buyers now add filters. Mouvair, a Chilean home wellness brand, made the change on its own store, and it was published as an Upsell.com (formerly ReConvert) case study. This was a before-and-after rollout, not a split test.

## Result

**~30% attach rate**

- About 30% of air purifier buyers add filters, per the founder's quote; the page's header stat says 27%.
- At least 60% of upsell revenue now depends on the thank-you page offer, per the quote; the header says 54%.
- Brand reports higher conversion than email-only upselling, but shared no email baseline.
- No sample size or timeframe was shared.

## Control

Replacement filters were offered later through email after the purifier purchase.

## Variant

A one-click filter offer on the thank-you page, shown right after an air purifier purchase.

## Why it likely won (our reading)

- Filters are a consumable every purifier owner needs, so the offer is relevant to nearly all buyers.
- Asking at the moment of purchase beats an email that may arrive late, go unopened or land in spam.
- One click to accept avoids a second checkout.

## Caveats

Before-and-after result published by the app vendor, with no email baseline numbers shared. The page gives two sets of figures (30% vs 27%, 60% vs 54%).

## How to run this test

- Hypothesis: If we offer the consumable refill on the thank-you page instead of in a later email, then attach rate will rise because buyers decide while still in buying mode.
- Primary metric: Refill attach rate per main-product order
- Guardrail: Later refill reorder rate
- Guardrail: Refund rate
- Guardrail: Email-driven revenue
- Who should test it: Stores selling devices with refills or consumables: purifiers, razors, coffee machines. Watch whether filters sold now just replace orders that email would have captured later.

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Credit: Mouvair ran this test and owns the result. Summary and commentary by LiftArchive (https://liftarchive.com/test/gap-mouvair-filter-upsell-vs-email/).
Usage: Free to use, quote and build on, with credit and a link: name the practitioner or organization that ran the test and link to its LiftArchive page. The results belong to the practitioners who ran and shared them; the summaries and commentary are LiftArchive's.