> For the complete documentation index, see [llms.txt](https://docs.bird.com/taxi/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.bird.com/taxi/connectors/sailthru-connector/setting-up-segmentation-for-sailthru.md).

# Segmentation in Taxi

[Segment sets](https://docs.messagebird.com/taxi/Dynamic%20content,%20segmentation%20and%20personalisation/Segmentation/creating-and-managing-segment-sets) and [single segments](https://docs.messagebird.com/taxi/Dynamic%20content,%20segmentation%20and%20personalisation/Segmentation/creating-and-managing-single-segments) are defined in the segmentation section of your Taxi account. These allow you to set up rules to control which content is sent to the groups of people within this segmentation. They are then applied to any of the modules in your Email Design System to give you complete control of the specific content that’s sent to your customers.

This segmentation is mapped by the connector to zephyr code snippets, and this zephyr is run when the email is sent. This ensures each recipient gets the content selected for them.

Once segments are set up it is possible to use them as many times as you need in the Taxi editor and to preview content for each segment.

\
To export code through the connector, the zephyr for segments must be added. This zephyr is set per connector. This means you can use different zephyr between environments, so you can work with different data structures and formats if needed.

\
Code for segments is entered through the segmentation settings.

![](https://2516523503-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FMq0EQG9Ff46ZMsrIBcVn%2Fuploads%2Fgit-blob-ff4140b88bd81cd393462973a2f7849bf4cd7588%2Fsailthru%2Bsegmentation.png?alt=media)![](https://2516523503-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FMq0EQG9Ff46ZMsrIBcVn%2Fuploads%2Fgit-blob-e4e0741b29f1daa29702e16d9d68cf3469b044b0%2Fsailthru%2Bsegmentation2.png?alt=media)

You can also add script to the top of the exported HTML any time that particular segment set is used

![](https://2516523503-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FMq0EQG9Ff46ZMsrIBcVn%2Fuploads%2Fgit-blob-bc153284ee81845a93bfd5f407b9e768fa0748cc%2Fsailthru%2Bsegmentation3.png?alt=media)


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