https://pastein.ru/t/Sl2

  скопируйте уникальную ссылку для отправки


{
    "data":{
        "status":"CREATED",
        "address":"address@email.com",
        "subject":"subject 1",
        "text":null,
        "sentDate":"2020-05-05T15:15:15",
        "direction":"OUT",
        "channelId":"109b38d2-528b-4390-bf8b-aa87b5e31b3d",
        "parts":[{
            "type":"text/plain; charset=UTF-8",
            "content":"content"
        }],
        "attachments":[{
            "fileName":"filename.txt","type":"bin","data":[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
        }]
    }
}