curl --request GET \
  --url https://api.example.com/api/Users/Me/UnlinkedMail

[
  {
    "activityID": 123,
    "typeID": 123,
    "from": "<string>",
    "to": "<string>",
    "subject": "<string>",
    "createdBy": 123,
    "agencyID": 123,
    "messageDate": "2023-11-07T05:31:56Z"
  }
]