Getting Gmail Unread Email Through Atom Feed in ASP.NET

Introduction

Atom makes it easy to receive regular updates from news websites, blogs, and/or Gmail. This feed is only available for Gmail accounts on Google Apps domains.

To get a Gmail Feed, you can access the Atom Feed for your Gmail account on the following URL:

https://mail.google.com/mail/feed/atom

Enter your Gmail account credentials and access the Atom Feed for all unread Email.

Note: Gmail messages will appear in your aggregator only if there are unread messages in your account inbox.

The following C# code shows how to read/save the atom feed of that account after a valid authentication process:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Security.Principal;
using System.Net;
using System.Collections;
using System.IO;
using System.Xml;
using System.Data; 

public partial class _Default : System.Web.UI.Page
{
   
    protected void Page_Load(object sender, EventArgs e)
    {
    }   
    protected void showdet(object sender, EventArgs e)
    {       
        NewMethod();
        login.Visible = false;
    }

    private void NewMethod()
    {
        var Url = @"https://mail.google.com/mail/feed/atom";
        var username = TextBox1.Text.Trim();
        var password = TextBox2.Text.Trim();
        var encoded = TextToBase64(username + ":" + password);
        var request = HttpWebRequest.Create(Url);
        request.Method = "POST";
         request.ContentLength = 0;
         request.Headers.Add("Authorization", "Basic" + encoded);
        var respone = request.GetResponse();
        var stream = respone.GetResponseStream();
        XmlReader reader = XmlReader.Create(stream);
        XmlDocument doc = new XmlDocument();
        doc.Load(reader);
         doc.Save(Server.MapPath("GmailFeed.xml"));
        DataSet dt = new DataSet();
        // dt.ReadXmlSchema(Server.MapPath("GmailFeed.xml"));
         dt.ReadXml(Server.MapPath("GmailFeed.xml"));      
        DataTable DT = dt.Tables[3];      
       // DT.Merge(dt.Tables[1]);
         DT.Merge(dt.Tables[2]);       
        grid.DataSource = DT;
        DataBind();
        Session["Table"] = DT;
    }

    public static string TextToBase64(string S)
    {
        System.Text.ASCIIEncoding encode = new System.Text.ASCIIEncoding();
        byte[] bytes = encode.GetBytes(S);
        return System.Convert.ToBase64String(bytes, 0, bytes.Length);
    }

    protected void IndexChagning(object sender, GridViewPageEventArgs e)
    {
        grid.PageIndex = e.NewPageIndex;
        if (!object.Equals(Session["Table"], null))
        {
             grid.DataSource = Session["Table"] as DataTable;
            DataBind();
        }                 
    }
}

Output

Enter Email and Password for your account and click on the button.





You will see that all the new or unread message from your account inbox will appear.