# Email experiments for post-purchase journeys

Test subject lines and content using clicks or attributed revenue. Review uncertainty and guardrails before choosing a winner; attributed revenue is different from incremental revenue measured against a control group.

## Part of post-purchase follow-up

The second-purchase programme adapts each customer’s journey in Shopify. Campaigns, segments and workflows remain available for actions your team wants to configure. For other CMS platforms, the API supports a custom integration with contacts and events.

[See Bitelio for Shopify](/integrations/shopify) | [I use another platform](/integrations/api)

New public Shopify installations are pending review. Contact hello@bitelio.com about availability. Programme activation requires preparing your content, channels and store limits.

[Feature options](/features/experiments) | [Documentation](https://docs.bitelio.com) | [Plans](/pricing)