You are viewing the Legacy Marketing Campaigns API reference. For guidance migrating to the current version of Marketing Campaigns, see Migrating from Legacy Marketing Campaigns
For the most up-to-date information on the Segments API, please visit the new Marketing Campaigns Segments v2 API.
The Segments API allows you to create and manage segments for your contacts. Segments are used to group contacts based on conditions you set. For example, you might create a segment for contacts who have opened a certain number of your emails, or for contacts who have not opened any of your emails in the last 30 days.