using System;

using System.Linq;

using Newtonsoft.Json.Linq;

public class Program

{

    public static void Main()

    {

        string json = @"

        [

          [""Sender"", ""service@mydomain.com""], 

          [""Date"", ""Sat, 19 Dec 2015 20:41:31 +0000""], 

          [""X-Mailgun-Sid"", ""WyI0ZjRjNyIsICJyYWplZXZrbXh4eddHh4eDMzMzMzQHlhaG9vLmNvbSIsICJjNGExZiJd""],

          [""Received"", ""by luna.mailgun.net with HTTP; Sat, 19 Dec 2015 20:41:31+0000""], 

          [""Message-Id"", ""<201512192024131.73374.12565@mydomain.com>""], 

          [""Reply-To"", ""junky01@hotmail.com""], 

          [""X-Mailgun-Skip-Verification"", ""false""], 

          [""To"", ""John Myers <testxxxxxx33333@yahoo.com>""], 

          [""From"", ""\""Inc.\"" <service@mydomain.com>""], 

          [""Subject"", ""Test subject""],

          [""Mime-Version"", ""1.0""], 

          [""Content-Type"", 

              [""multipart/mixed"", { ""boundary"": ""e43d638b70f04a40889d14f4c8422953"" } ]

          ]

        ]";

        JArray rows = JArray.Parse(json);

        foreach (JArray row in rows)

        {

            Console.WriteLine(string.Join(": ", row.Select(r => r.ToString())));

        }

​

    }

}