Index - View
@model SendAFaxWeb.Models.Send
//view start here
Test Upload File
You have implemented cross origin security like : @Html.AntiForgeryToken(). So you have to pass that value as parameter in your AJAX call as below.
AJAX:
data:{__RequestVerificationToken:$('[name=__RequestVerificationToken]').val();}
Also you have to add attribute in controller.
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Send(Send contact)