Read emails in GMail account from your ASP.Net application

Posted Date: 23 Jun 2008	Resource Type: Code Snippets	Category: ASP.NET WebForms
Author: Satalaj More	Member Level: Silver
Rating:	Points: 10

Hi,
Here is simple way of reading your gmail email using ASP.net web application
Before using this code make sure you are able to access your gmail email using outlook
if not then login to www.gmail.com click on settings => pop => check to access email outside gmail web client

Refer POP rfc http://www.faqs.org/rfcs/rfc1939

Steps
1. create new asp.net web application
2. add one button in it
3. on button click write following code

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Net.NetworkInformation;
using System.Net.Security;
using System.Net.Sockets;

protected void Button9_Click(object sender, EventArgs e)
{

try

{

TcpClient tcpclient = new TcpClient(); // create an instance of TcpClient

tcpclient.Connect("pop.gmail.com", 995); // HOST NAME POP SERVER and gmail uses port number 995 for POP

System.Net.Security.SslStream sslstream = new SslStream(tcpclient.GetStream()); // This is Secure Stream // opened the connection between client and POP Server

sslstream.AuthenticateAsClient("pop.gmail.com"); // authenticate as client

//bool flag = sslstream.IsAuthenticated; // check flag

System.IO.StreamWriter sw = new StreamWriter(sslstream); // Asssigned the writer to stream

System.IO.StreamReader reader = new StreamReader(sslstream); // Assigned reader to stream

sw.WriteLine("USER your_gmail_user_name@gmail.com"); // refer POP rfc command, there very few around 6-9 command

sw.Flush(); // sent to server

sw.WriteLine("PASS your_gmail_password");
sw.Flush();

sw.WriteLine("RETR 1"); // this will retrive your first email

sw.Flush();

sw.WriteLine("Quit "); // close the connection

sw.Flush();

string str = string.Empty;
string strTemp = string.Empty;

while ((strTemp = reader.ReadLine()) != null)
{

if (strTemp == ".") // find the . character in line

{

break;
}

if (strTemp.IndexOf("-ERR") != -1)
{

break;
}

str += strTemp;

}

Response.Write(str);

Response.Write("
" + "Congratulation.. ....!!! You read your first gmail email ");
}

catch (Exception ex)
{

Response.Write(ex.Message);

}

}

For more details, visit http://weblogs.asp.net/satalajmore/

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