How to Send Mail in MVC6 Using C# Code With Attachment

This article will show you how you can send an email using gmail as smtp server in mvc5 and mvc6 using c#.net with attachment. This application we can use in MVC3, MVC4, MVC5, MVC6.

Some of my previous articles are as follows: Gmail Smtp Error : 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, Read Outlook Inbox Mail And Email Count Of Inbox Using C#.Net, Business Email Validation Using RegularExpressionValidator Control in Asp.net, Email Validation in Windows Application C#.Net and VB.Net, Email Address Validation in Javascript in Asp.Net, How to Add Email Id Hyperlink or Mailto Link in Asp.net MVC WebGrid, Send Mail In Asp.Net C# Using Gmail.

Now we will create an image folder

So for this article first we will create a new  mvc application and add a controller and create the view for creating the form. This form will contain fields to provide information to send in email. Now add the below code in your view.

@{     ViewBag.Title = "How to Send Mail in MVC6 Using C# Code With Attachment"; } @using (Html.BeginForm("Index", "Home", FormMethod.Post, new { enctype = "multipart/form-data" })) {     <table width="100%" border="1">         <tr>             <td align="right" colspan="2" style="text-align: center"><strong>SEND EMAIL USING GMAIL ACCOUNT IN MVC</strong></td>         </tr>         <tr>             <td align="right">&nbsp;</td>             <td align="left">                 @ViewBag.Message             </td>         </tr>         <tr>             <td align="right">To :</td>             <td align="left">                 <input id="txttoaddress" name="ToEmailId" width="250px" />             </td>         </tr>         <tr>             <td align="right">Subject :</td>             <td align="left">                 <input id="txtsubject" name="Subject" width="250px"></input>             </td>         </tr>         <tr>             <td align="right">Message Body :</td>             <td align="left">                 <textarea rows="4" cols="50" name="Message" id="txtmessage"></textarea>             </td>         </tr>         <tr>             <td align="right">Attachment :</td>             <td align="left">                 <input type="file" name="file" />             </td>         </tr>         <tr>             <td align="center" colspan="2">                 <input type="submit" text="Send Message" />             </td>         </tr>     </table> }

In above code I have added some textbox and button control and input file control. Here we need to take care one thing about the name of the control. You must use a specific name of a control. So we use name of the control to access the value of control.

After this we will the below code to the controller.

using MvcApplication8.Models; using System; using System.Collections.Generic; using System.Linq; using System.Net.Mail; using System.Web; using System.Web.Mvc; namespace MvcApplication8.Controllers {     public class HomeController : Controller     {         //         // GET: /Home/         [HttpGet]         public ActionResult Index()         {             return View();         }         [HttpPost]         public ActionResult Index(string ToEmailId, string Subject, string Message, HttpPostedFileBase file)         {             try             {                 MailMessage mail = new MailMessage();                 mail.To.Add(ToEmailId);                 mail.From = new MailAddress("dotnetpools@gmail.com");                 mail.Subject = Subject;                 string Body = Message;                 mail.Body = Body;                 mail.IsBodyHtml = true;                 //Send Attahment                 System.Net.Mail.Attachment attachment;                 string filename = System.IO.Path.GetFileName(file.FileName);                 /*Saving the file in server folder*/                 file.SaveAs(Server.MapPath("~/Images/" + filename));                 string filepathtoattach = "Images/" + filename;                 attachment = new System.Net.Mail.Attachment(Server.MapPath(filepathtoattach));                 mail.Attachments.Add(attachment);                 SmtpClient smtp = new SmtpClient();                 //SMTP Server Address of gmail                 smtp.Host = "smtp.gmail.com";                 smtp.Port = 587;                 smtp.Credentials = new System.Net.NetworkCredential("dotnetpools@gmail.com", "BlackBery1@#");                 // Smtp Email ID and Password For authentication                 smtp.EnableSsl = true;                 smtp.Send(mail);                 ViewBag.Message = "Message snd successfully";             }             catch             {                 ViewBag.Message = "Error............";             }             return View();         }     } }

So in above code I have used the smtp of gmail for sending the email.  In above please check the parameter passed in the httppost method.

In above code I have used System.Net.Mail.Attachment and then I find out the file name and then save it into the images folder. And then I passed the saved file path in mail attachment .

Keep it same as the control names in your view.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.

http://www.aspdotnet-pools.com/2016/08/gmail-smtpo-error-smtp-server-requires.html

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

Now check the received email