Use this endpoint to retrieve a report of all email campaigns that were sent to a contact.
Retrieves a report of all email campaigns that were sent to the contact specified by the contactId path parameter (REQUIRED). Use the created_since query parameter to retrieve only the activity that occurred on or after the date/time specified. This is useful for sync'ing tracking data across applications.
Use to retrieve only sends that occurred on or after the date/time specified in ISO-8601 format.