# Designing your segment {% hint style="info" %} Segments are dynamic, which means they update in real-time as your data changes. {% endhint %} Use the Add Rule button to add a Search Rule to your segment ![](https://d2x3xhvgiqkx42.cloudfront.net/e0384b56-4f90-47bf-9077-d8a44f0eb175/2a05d828-eb35-44b0-9b70-bfc4c7204e36/2018/12/19/73e32d0b-0af6-4ca6-a1d4-ebbc174d1324.png) ![](https://d2x3xhvgiqkx42.cloudfront.net/e0384b56-4f90-47bf-9077-d8a44f0eb175/2a05d828-eb35-44b0-9b70-bfc4c7204e36/2018/12/19/6a87f411-309b-4a15-95d5-18ddef6a7eb3.png) Contact Info Rules are used to search by the following criteria Contact list properties such as: * name * zip code * domain name * gender * tags * creation date * anything you've stored in your contact list data as a property {% hint style="info" %} Click the + sign to add additional criteria {% endhint %} ![](https://d2x3xhvgiqkx42.cloudfront.net/e0384b56-4f90-47bf-9077-d8a44f0eb175/2a05d828-eb35-44b0-9b70-bfc4c7204e36/2018/12/19/b0192cad-57fe-468d-afaf-248ce5ed4f21.png) Search for contacts that were added in the last X number of days or during a specific date range ![](https://d2x3xhvgiqkx42.cloudfront.net/e0384b56-4f90-47bf-9077-d8a44f0eb175/2a05d828-eb35-44b0-9b70-bfc4c7204e36/2018/12/19/ee366625-1263-4b93-b4f6-444468ecec02.png) ![](https://d2x3xhvgiqkx42.cloudfront.net/e0384b56-4f90-47bf-9077-d8a44f0eb175/2a05d828-eb35-44b0-9b70-bfc4c7204e36/2018/12/19/ed0ce708-cf3f-4d04-ab29-9d69ccca20bf.png) List Membership Rules List Membership Rules find or exclude contacts based on their lists and segments ![](https://d2x3xhvgiqkx42.cloudfront.net/e0384b56-4f90-47bf-9077-d8a44f0eb175/2a05d828-eb35-44b0-9b70-bfc4c7204e36/2018/12/19/77141577-42c7-4012-8689-f750fcc83299.png) Message Engagement Rules ![](https://d2x3xhvgiqkx42.cloudfront.net/e0384b56-4f90-47bf-9077-d8a44f0eb175/2a05d828-eb35-44b0-9b70-bfc4c7204e36/2018/12/19/c43c416f-3349-43c5-a3be-ece70030d224.png) Message Engagement Rules are used to search by the following criteria * Contacts who opened or clicked on links in specific messages * Contacts who opened or clicked on links in ANY messages * Contacts who did not open or click on links in specific messages * Contacts who have not open or clicked on links in ANY messages * Whether contacts opened or clicked on links in messages in the past X number of days or within a specific date range * Contacts for whom a message was successfully delivered * Contacts for whom a message was unsuccessfully delivered * The location contacts opened or clicked on links in messages from including country, state, and zip code * Device type, operating system, and browser contacts opened or clicked on links in messages from ![](https://d2x3xhvgiqkx42.cloudfront.net/e0384b56-4f90-47bf-9077-d8a44f0eb175/2a05d828-eb35-44b0-9b70-bfc4c7204e36/2018/12/19/abc631d6-3e18-4f9e-b5c0-2422bc5869c9.png) Select how search rules pass or fail, commonly known as and/or logic ![](https://d2x3xhvgiqkx42.cloudfront.net/e0384b56-4f90-47bf-9077-d8a44f0eb175/2a05d828-eb35-44b0-9b70-bfc4c7204e36/2018/12/19/acecbd35-628f-4399-8fec-8d0531b2eb13.png) There are three choices for how the search rules you create can pass or fail for this segment {% hint style="info" %} **All** Every rule has to be true. If any of your rules contain false criteria, all of the rules will fail and 0 matching contacts will be returned. {% endhint %} {% hint style="info" %} **Any** If any rule is true, return matches and simply disregard non-matches. {% endhint %} {% hint style="info" %} **None** Exclude contacts matching these rules from the segment {% endhint %} ![](https://d2x3xhvgiqkx42.cloudfront.net/e0384b56-4f90-47bf-9077-d8a44f0eb175/2a05d828-eb35-44b0-9b70-bfc4c7204e36/2018/12/19/31160c02-d5df-4cba-accc-93895d144c7a.png) Using a Rule Group to add depth with nested all/any/none combinations ![](https://d2x3xhvgiqkx42.cloudfront.net/e0384b56-4f90-47bf-9077-d8a44f0eb175/2a05d828-eb35-44b0-9b70-bfc4c7204e36/2018/12/19/977e3011-01c7-4de7-8055-268e3c48567a.png) {% hint style="info" %} Rule groups allows you to create a secondary group of Search Rules with their own pass/fail criteria {% endhint %} This greatly opens up the combination of possibilities ![](https://d2x3xhvgiqkx42.cloudfront.net/e0384b56-4f90-47bf-9077-d8a44f0eb175/2a05d828-eb35-44b0-9b70-bfc4c7204e36/2018/12/19/533f5d54-1f78-422b-89c0-b9d3a0af1c65.png) ![](https://d2x3xhvgiqkx42.cloudfront.net/e0384b56-4f90-47bf-9077-d8a44f0eb175/2a05d828-eb35-44b0-9b70-bfc4c7204e36/2018/12/19/eeafc73d-5d65-4546-af05-983fcedd7e56.png) Here we search for contacts tagged as purchasers who have opened their emails from America, but only if they exist in at least one of three specified contact lists. ![](https://d2x3xhvgiqkx42.cloudfront.net/e0384b56-4f90-47bf-9077-d8a44f0eb175/2a05d828-eb35-44b0-9b70-bfc4c7204e36/2018/12/19/2a7f4333-c6f1-4312-91c9-dccd2ab7ea15.png) Click the "Save" button in the upper right to save your segment and see the number of contacts found. {% hint style="warning" %} Remember, if "All" is specified for the passing condition, this number can show 0. {% endhint %} {% hint style="info" %} Your contact count will increment in real time as your data changes, all segmenting is dynamic. {% endhint %} ![](https://d2x3xhvgiqkx42.cloudfront.net/e0384b56-4f90-47bf-9077-d8a44f0eb175/2a05d828-eb35-44b0-9b70-bfc4c7204e36/2018/12/19/447cfda0-1590-4821-9429-e6b78714811e.png) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.emaildelivery.com/docs/segmenting/designing-your-segment.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.