using System;

using System.Text.RegularExpressions;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

         string email = @"EMAIL STARTING IN APRIL

​

Marketing ID                                     Local Number

-------------------                              ----------------------

GR332230                                         0000232323

​

Dispatch Code                                    Logic code

-----------------                                -------------------

GX3472                                           1

​

Destination ID                                   Destination details

-----------------                                -------------------

3411144";

​

            var dict = new Dictionary<string, string>();

            try

            {

                var lines = email.Split(Environment.NewLine.ToCharArray(), StringSplitOptions.RemoveEmptyEntries);

                int starts = 0, end = 0, length = 0;

                while (!lines[starts + 1].StartsWith("-")) starts++;

                for (int i = starts + 1; i < lines.Length; i += 3)

                {

                    var mc = Regex.Matches(lines[i], @"(?:^| )-");

                    foreach (Match m in mc)

                    {

                        int start = m.Value.StartsWith(" ") ? m.Index + 1 : m.Index;

                        end = start;

                        while (lines[i][end++] == '-' && end < lines[i].Length - 1) ;

                        length = Math.Min(end - start, lines[i - 1].Length - start);

                        string key = length > 0 ? lines[i - 1].Substring(start, length).Trim() : "";

                        end = start;

                        while (lines[i][end++] == '-' && end < lines[i].Length) ;

                        length = Math.Min(end - start, lines[i + 1].Length - start);

                        string value = length > 0 ? lines[i + 1].Substring(start, length).Trim() : "";

                        dict.Add(key, value);

                    }

                }

            }

            catch (Exception ex)

            {

                throw new Exception("Email is not in correct format");

            }

        foreach(var x in dict)

            Console.WriteLine("{0} : {1}", x.Key, x.Value);

    }

}