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Thursday, 25 August 2016

Send Mail In Asp.Net C# Using Gmail

8/25/2016 - By Pranav Singh 0

This article will show you how you can send an email using gmail as smtp server in asp.net using c#.net.


So for this article first we will create a new aasp.net application and create a form. This form will contain fields to provide information to send in email. So here is the page code.

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm13.aspx.cs" Inherits="WebApplication7.WebForm13" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>send mail in asp.net c# using gmail</title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <table width="100%" border="1">
                <tr>
                    <td align="right" colspan="2" style="text-align: center"><strong>SEND EMAIL USING GMAIL ACCOUNT</strong></td>
                </tr>
                <tr>
                    <td align="right">&nbsp;</td>
                    <td align="left">
                        <asp:Label ID="lblmessage" runat="server" Style="color: #FF3300"></asp:Label>
                    </td>
                </tr>
                <tr>
                    <td align="right">To :</td>
                    <td align="left">
                        <asp:TextBox ID="txttoaddress" runat="server" Width="250px"></asp:TextBox>
                    </td>
                </tr>
                <tr>
                    <td align="right">Subject :</td>
                    <td align="left">
                        <asp:TextBox ID="txtsubject" runat="server" Width="250px"></asp:TextBox>
                    </td>
                </tr>
                <tr>
                    <td align="right">Message Body :</td>
                    <td align="left">
                        <asp:TextBox ID="txtmessage" runat="server" Height="103px" TextMode="MultiLine"
                            Width="250px"></asp:TextBox>
                    </td>
                </tr>
                <tr>
                    <td align="center" colspan="2">
                        <asp:Button ID="Button1" runat="server"
                            OnClick="Button1_Click" Text="Send Message" /></td>
                </tr>
            </table>
        </div>
    </form>
</body>
</html>

After this we will create a button click event and add the below code.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Mail;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace WebApplication7
{
    public partial class WebForm13 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            try
            {
                MailMessage mail = new MailMessage();
                mail.To.Add(txttoaddress.Text);
                mail.From = new MailAddress("yourgmailid @gmail.com");
                mail.Subject = txtsubject.Text;
                string Body = txtmessage.Text;
                mail.Body = Body;
                mail.IsBodyHtml = true;
                SmtpClient smtp = new SmtpClient();
                smtp.Host = "smtp.gmail.com"; //SMTP Server Address of gmail
                smtp.Port = 587;
                smtp.Credentials = new System.Net.NetworkCredential("yourgmailid@gmail.com", "password");
                // Smtp Email ID and Password For authentication
                smtp.EnableSsl = true;
                smtp.Send(mail);
                lblmessage.Text = "Your Message Send Successfully.";
            }
            catch
            {
                lblmessage.Text = "Error............";
            }
        }
    }
}

So in above code I have used the smtp of gmail for sending the email. Now one this after execution if you are getting error message as shown below:

The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required. Learn more at

Then follow the below link to resolve the error.


Now we have done. Run the application to check the output.





Now check the received email



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