> ## Documentation Index
> Fetch the complete documentation index at: https://docs.inboxapp.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Run A/B tests with segmented lists

> Inboxapp has no native in-campaign A/B test — split lists and run parallel campaigns instead.

There is no native A/B test inside a single campaign. To compare copy, split the audience into similar lists and run parallel campaigns.

## Steps

1. Split one audience into equal lists (for example List A and List B, \~same size).
2. Create **Campaign A** → List A and **Campaign B** → List B.
3. Keep every setting the same except **one** variable (opening line, CTA, tone, or personalization).
4. Launch both at the same time.
5. Compare reply rate and other Overview metrics — [Campaign analytics](/help/campaigns/run-and-measure/campaign-analytics-completion-and-reply-rates).

## Tips

* Even splits and identical settings keep the test fair
* Run long enough for meaningful reply counts
* Roll the winner into future campaigns

## Related

* [Create your first campaign](/help/campaigns/build/create-your-first-campaign)
* [Filtering and segmenting leads](/help/leads-management/organize/filtering-and-segmenting-your-leads)

Still stuck? Contact support from the app.