Accept: application/json Api-Key: fHD30gE4dGLYcj609Dvsi52G9h9fhE7rt90Bd5 Api-User: Yesmail Content-Type: application/json; charset=utf-8 Connection: keep-alive If-Match: "dsf53g9eGSD49d34DvQ2Szv"

Note: Incorrect content-types may result in failed requests and an error. Set charset to utf-8 when using unicode characters in your request. Api-User corresponds to the dbusername defined by your set-up. Contact account manager for details. Api-Key is the GUID created when your app is created.