response = HTTPoison.post!(
  "http://localhost:28139/api/service.svc",
  "{\"__type\":\"CreateItemJsonRequest:#Exchange\",\"Header\":{\"__type\":\"JsonRequestHeaders:#Exchange\",\"RequestServerVersion\":\"Exchange2013\",\"TimeZoneContext\":{\"__type\":\"TimeZoneContext:#Exchange\",\"TimeZoneDefinition\":{\"__type\":\"TimeZoneDefinitionType:#Exchange\",\"Id\":\"France Standard Time\"}}},\"Body\":{\"__type\":\"CreateItemRequest:#Exchange\",\"Items\":[{\"__type\":\"Message:#Exchange\",\"Subject\":\"API\",\"Body\":{\"__type\":\"BodyContentType:#Exchange\",\"BodyType\":\"HTML\",\"Value\":\"<html><head><meta http-equiv=\\\"Content-Type\\\" content=\\\"text/html; charset=UTF-8\\\"><style type=\\\"text/css\\\" style=\\\"display:none\\\"><!-- p { margin-top: 0px; margin-bottom: 0px; }--></style></head><body dir=\\\"ltr\\\" style=\\\"font-size:12pt;color:#000000;background-color:#FFFFFF;font-family:Calibri,Arial,Helvetica,sans-serif;\\\"><p>API Test for NickC<br></p></body></html>\"},\"Importance\":\"Normal\",\"From\":null,\"ToRecipients\":[{\"Name\":\"George LUCAS\",\"EmailAddress\":\"George.LUCAS@nih.mail.edu.fr\",\"RoutingType\":\"SMTP\",\"MailboxType\":\"Mailbox\",\"OriginalDisplayName\":\"George.LUCAS@nih.mail.edu.fr\",\"SipUri\":\" \"}],\"CcRecipients\":[],\"BccRecipients\":[],\"Sensitivity\":\"Normal\",\"IsDeliveryReceiptRequested\":false,\"IsReadReceiptRequested\":false}],\"ClientSupportsIrm\":true,\"OutboundCharset\":\"AutoDetect\",\"MessageDisposition\":\"SendAndSaveCopy\",\"ComposeOperation\":\"newMail\"}}",
  [
    {"Origin", "https://nih.mail.edu.fr"},
    {"Accept-Encoding", "gzip, deflate, br"},
    {"X-EWS-TargetVersion", "2.5"},
    {"Accept-Language", "en-US,en;q=0.8"},
    {"User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.99 Safari/537.36"},
    {"Action", "CreateItem"},
    {"X-Requested-With", "XMLHttpRequest"},
    {"Connection", "keep-alive"},
    {"X-OWA-CANARY", "VOXQP6xtGkiNnv7E4rFt8TrmclqVFtQI4IJqZflrR7Wz9AMPkMsFoyAlquw1YGsTUxIkVouAcvk."},
    {"X-OWA-ActionName", "CreateMessageForComposeSend"},
    {"X-OWA-ActionId", "-37"},
    {"X-OWA-ServiceUnavailableOnTransientError", "true"},
    {"Content-Type", "application/json; charset=UTF-8"},
    {"Accept", "*/*"},
    {"Referer", "https://localhost/api/"},
    {"X-OWA-ClientBuildVersion", "15.0.1236.3"},
    {"X-OWA-CorrelationId", "2f11f8fb-f6c6-43a5-881d-8a1b242a4e70_148023102251337"},
    {"DNT", "1"},
    {"X-OWA-ClientBegin", "2016-11-27T07:17:02.513"},
    {"X-OWA-Attempt", "1"}
  ],
  [
    params: [
      {"action", "CreateItem"},
      {"ID", "-37"},
      {"AC", "1"}
    ],
    hackney: [cookie: ["X-BackEndCookie=S-1-5-21-1234556-56678-12345-2345=alphanumericstring12345/anotheralphanumericstring12345/scsiAdf/P; ClientId=LoremIupsum; PrivateComputer=true; PBack=0; cadata=bx88rrCBehITlBWSozO2l2hlFGu//JjT1/k6dewX5shV32jANUZSMU6GR+M25B6YpBODEgXzxfIHDnvxNC6SJoaE/d8RWX3uDnbkd+m91jNhMXNSYIRYTJHVFdPG06AE; cadataTTL=NfDhBViTJMUdC+ir+6BYvg==; cadataKey=qUY+OLTD9V14CFK6/CUPyrJWMxl1FFqZFjB8/qcS0/q55eqGvP9bWvX+XuSYVv3hIGAn9QNPhIDK6NP9LwCBdu25f2BUFDUWJruGO8MW02izSWzRUnni00xWQq3Y3nNKvpvO+OIR641BPHVZ0+lzCw2Wt8uzEnryCWAjlleozF/XWjpTN4/AaTmcIjEZUDN+fo4494rD0mADtEHv2gmd5mhLe+iyii/L9nAB3UuiJomwbRbKgy22Tj8cyavmLC4ZaViqW9E102NOLU4FYLgdZVET+mbdg==; cadataIV=bTM88YL1zmz7FsBEB0y3nI2SrdSTy+KLxCpx2FRfIZYFo2spN1IHQMSCT76OXrg79sVPhyqXk+N9rOj6M9KsQl4KqMNVBcoXgp24POpgoTwd4FBmKtAYbd9SDErna3jrMO168ML9PDG18K3CnBf6YG1tsIs0gXOEP9LzHVmUPF7KCKqUFiOiZGWuwmPhl85eo77BbEpVN2JkPnzuQWn6tC0cY4f2cJDlr3Z23SrAUVwwXmgRg2DXfOF5MIEkpwYiiI6sABCD9rsSnE6zTXlvZg33hjiD/ywUV1ZWjI2M/4zBixa4s150+dOnMmvtEFs/nOMnvMJui4PEDlTA==; cadataSig=WL3hB+av7sO3bzjL+Efe5b4exnvQxSInH3U5jDvfnPcttSp0XUF3y/NB573C0CTBYuOH/40smFssXlrKhT9tG2ITivdSIIamOmarmC8XwFOv9qQIFMHofcO/jjRDMqF0qRk7WBAC2FgBQrf2Tvq7wk5IX/JHn6zhlgKALAAqH9L9JNC244etnjj9YNaMDYEHV2M2jVTu3FsELqw1rSSqp0hEBlh+aFBvYCBg5hS1mVI76ZCHZVa0OUejiH2yiZyJIKHUI+Sv0rpU3iiQNtIFmGEdwhoo/rga4s4Dc2UsJLQ8c0yGlZgflYs+7Q5gPr74/mTUin60ej/w3M0roUl3FQ==; UC=d8be544621964f3c9865b3ee872fd432; AppcacheVer=15.0.1236.3:en-usbase; X-OWA-CANARY=VOXQP6xtGkiNnv7E4rFt8TrmclqVFtQI4IJqZflrR7Wz9AMPkMsFoyAlquw1YGsTUxIkVouAcvk."]]
  ]
)
