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Monday, April 18, 2011
Send Email Using Gmail in ASP.Net

To send email using gmail in asp.net, write this code in click event of button

C# code

protected void Button1_Click(object sender, EventArgs e)
{
   MailMessage mail = new MailMessage();
   mail.To.Add("jainamit.agra@gmail.com");
   mail.To.Add("amit_jain_online@yahoo.com");
   mail.From = new MailAddress("jainamit.agra@gmail.com");
   mail.Subject = "Email using Gmail";
    string Body = "Hi, this mail is to test sending mail"+
                  "using Gmail in ASP.NET";   mail.Body = Body;
    mail.IsBodyHtml = true;
   SmtpClient smtp = new SmtpClient();
   smtp.Host = "smtp.gmail.com"; //Or Your SMTP Server Address
   smtp.Credentials = new System.Net.NetworkCredential
        ("YourUserName@gmail.com","YourGmailPassword");
 //Or your Smtp Email ID and Password
   smtp.EnableSsl = true;   smtp.Send(mail); }

VB.NET code

Imports System.Net.Mail
   Protected  Sub Button1_Click (ByVal sender As Object, ByVal e As EventArgs)
   Dim mail As MailMessage =  New MailMessage()
    mail.To.Add("jainamit.agra@gmail.com")
   mail.To.Add("amit_jain_online@yahoo.com")
   mail.From = New MailAddress("jainamit.agra@gmail.com")
   mail.Subject = "Email using Gmail"
     String Body = "Hi, this mail is to test sending mail"+
                  "using Gmail in ASP.NET"   mail.Body = Body
     mail.IsBodyHtml = True
   Dim smtp As SmtpClient =  New SmtpClient()
    smtp.Host = "smtp.gmail.com" //Or Your SMTP Server Address
   smtp.Credentials = New System.Net.NetworkCredential
        ("YourUserName@gmail.com","YourGmailPassword")
   smtp.EnableSsl = True
   smtp.Send(mail)
 End Sub  

You also need to enable POP by going to settings > Forwarding and POP in your gmail account

Change YourUserName@gmail.com to your gmail ID and YourGmailPassword to Your password for Gmail account and test the code.

If your are getting error mentioned below
"The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required."

than you need to check your Gmail username and password.

If you are behind proxy Server then you need to write below mentioned code in your web.config file
<system.net>
 <defaultProxy>
 <proxy proxyaddress="YourProxyIpAddress"/>
 defaultProxy> 
>

If you are still having problems them try changing port number to 587
smtp.Host = "smtp.gmail.com,587";

If you still having problems then try changing code as mentioned below
SmtpClient smtp = new SmtpClient(); 
smtp.Host = "smtp.gmail.com"; 
smtp.Port = 587; 
smtp.UseDefaultCredentials = False; 
smtp.Credentials = new System.Net.NetworkCredential 
  ("YourUserName@gmail.com","YourGmailPassword"); 
smtp.EnableSsl = true; smtp.Send(mail);

This will definitely helps you.

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posted by WebTeks @ 7:59 PM   39 comments
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