Embed a html file in email body

Steps Involved:

Open Visual Studio 2010 by going Start | All Programs | Microsoft Visual Studio 2010 | Right click on Microsoft Visual Studio 2010 and click on Run as administrator.
Go to File tab, click on New and then click on Project.
In the New Project dialog box, expand the Visual C# node, and then select the Windows node.
In the Templates pane, select Console Application.
Enter the Name as SendEmailand then click OK.
In the solution explorer, right click on the solution and then click on Properties.
Select the Application tab, check whether “.Net Framework 3.5” is selected for Target Framework.
Select the Build tab, check whether “Any CPU” is selected for Platform Target.
Add the following references

Microsoft.SharePoint

Add the following namespaces

using Microsoft.SharePoint.Administration;
using System.Net.Mail;
using System.IO;

Replace Program.cs with the following code

 
 
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net.Mail;
using System.IO;
using Microsoft.SharePoint.Administration;
 
namespace SendEmail
{
    class Program
    {
        static void Main(string[] args)
        {
            string html=string.Empty;
            using (StreamReader streamReader = new StreamReader(@"D:\MailBody.html"))
            {
                html=streamReader.ReadToEnd();
            }
                SPWebApplication webApp = SPWebApplication.Lookup(new Uri("https://serverName/"));
                MailMessage mail = new MailMessage();
                mail.From = new MailAddress("[email protected]");
                mail.To.Add("[email protected]");
                mail.Subject = "Test";
                mail.IsBodyHtml = true;
                mail.Body = html;
                // SmtpClient class sends the email by using the specified SMTP server
                SmtpClient smtp = new SmtpClient(webApp.OutboundMailServiceInstance.Server.Address);
                smtp.UseDefaultCredentials = true;
                smtp.Send(mail);
            }
        }
    }
}

Output: