How to send email with attachment using Gmail SMTP from asp.net MVC application

In this article I am going to explain how to send email with attachment using Gmail SMTP from asp.net MVC application.

Description:

I want to send email with attachment using Gmail account.

Implementation:

Open the web.config file of project. Set key in Appsettings. After that mailsettings as shown below:

<appSettings>

    <add key="Email" value="Emailaddress@gmail.com"/>

  </appSettings>

  <system.net>

    <mailSettings>

      <smtp deliveryMethod="Network">

        <network enableSsl="true" port="587" host="smtp.gmail.com" userName=" Emailaddress@gmail.com" password="password"/>

      </smtp>

    </mailSettings>

  </system.net>

 Add Controller

Add empty controller to project. Create an ActionResult to send email.

Complete code of Controller:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.Mvc;

using MvcApplication2017.Models;

using System.Security.Cryptography;

using System.Configuration;

using System.Net.Mail;

using System.Net;

using System.IO;

namespace mvcapplication2017.Controllers

{

  

    public class LoginController : Controller

    {

        //

        // GET: /Login/

        DemoEntities db = new DemoEntities();

        public ActionResult Index()

        {

            return View();

        }

        public ActionResult SendEmail()

        {

            return View();

        }

        [HttpPost]

        public ActionResult SendEmail(string Name, string Subject,string EmailID, string message,HttpPostedFileBase file1)

        {

            if (ModelState.IsValid)

            {

                string Email = ConfigurationManager.AppSettings["Email"].ToString();

                string Emailto = EmailID;

                MailMessage mail = new MailMessage(Email, Emailto);

                mail.Subject = Subject;

                string mailmessage = "Name :"+ Name +"<br>"+ message;

                mail.Body = mailmessage;

                mail.IsBodyHtml = true;

                if (file1 != null && file1.ContentLength > 0) 

                {

                    string fileName = string.Format("{0}/{1}", Server.MapPath("~/images/"), Path.GetFileName(file1.FileName));

                    file1.SaveAs(fileName);

                    mail.Attachments.Add(new Attachment(fileName));

                }

                SmtpClient smtp = new SmtpClient();

                smtp.Send(mail);

                ViewBag.Message = "Email sent successfully";

            }

            return View();

        }

    }

}

  

Add view:

Add new view for SendEmail Actionresult.

Source code of View:

@{

    ViewBag.Title = "Send Email";

}

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>

<h2>Send Email</h2>

@using (Html.BeginForm("SendEmail", "Login", FormMethod.Post, new { enctype = "multipart/form-data" }))

{

    @Html.ValidationSummary()

<fieldset>

    <legend>Send Email</legend>

    <table>

        <tr>

            <td>Name :</td>

            <td>@Html.TextBox("Name", "", new { @data_val = "true", @data_val_required = "Please enter name",placeholder="Name"})</td>

        </tr>

        <tr>

            <td>Email :</td>

            <td>@Html.TextBox("EmailID","", new { @data_val = "true",@data_val_email="email dsfdsfsdf", @data_val_required = "Please enter email address",placeholder="Email" })</td>

        </tr>

        <tr>

            <td>Subject :</td>

            <td>@Html.TextBox("Subject", "", new { @data_val = "true", @data_val_required = "Please enter subject", placeholder = "Subject" })</td>

        </tr>

        <tr>

            <td>Message :</td>

            <td>@Html.TextArea("message", "", new { rows = "6", cols = "22", @data_val = "true", @data_val_required = "Please enter message", placeholder = "Message" })</td>

        </tr>

        <tr>

            <td>Attachment :</td>

            <td><input id="File1" name="File1" type="file" /></td>

        </tr>

        <tr>

            <td></td>

            <td><input type="submit" value="Send Email" /></td>

        </tr>

    </table>

    @ViewBag.Message

</fieldset>

}

<script src="~/Scripts/jquery.validate.min.js"></script>

<script src="~/Scripts/jquery.validate.unobtrusive.min.js"></script>