Use this method to get a list of all segments associated with the account. You can sort segment results and limit the number of segments that display per page. Deleted segments are excluded from the results. For more use case information, see Get All Segments in the API guide.

Use this method to create a new segment. You create segments to target a subset of your contacts that meet your specific criteria for a marketing campaign. The segment name must be unique. The segment_criteria requires single-string escaped JSON. Constant Contact uses the contact data that you specify in the segment_criteria to evaluate and identify the contacts you want to target. Contact data can be grouped from different data sources, including:

• tracking: Supports or and and groups.

• contact: Supports or and and groups.

• list_membership: Supports or groups.

• tags: Supports or groups.

If you do not specify list_membership as criteria, Constant Contact evaluates all contacts in your account. To avoid returning a 400 error response, when specifying the segment_criteria do not request more than 500 email campaigns or a date range greater than 1825 days (5 years) be evaluated.

For more use case information, see the Segments Overview in the API guide.