The Post Office API provides access to statistical data on email marketing campaigns sent from addresses that are registered and verified in Postoffice.
The Post Office API is based on REST principles. API access occurs over the HTTP protocol. GET requests are sent to the API, and the service returns data in JSON format.
To access statistical data on email marketing sent by a particular user, the application must be authorized using an OAuth access token.
The total number of API requests is not restricted, but if a large number of requests is made at once, the API response is delayed.