In this post, I will create simple mail helper class for sending emails in ASP.NET MVC using C#.

IMPLEMENTATION

Step 1

Create a class name MailHelper and the add the following code:

public class MailHelper
    {
        private const int Timeout = 180000;
        private readonly string _host;
        private readonly int _port;
        private readonly string _user;
        private readonly string _pass;
        private readonly bool _ssl;

        public string Sender { get; set; }
        public string Recipient { get; set; }
        public string RecipientCC { get; set; }
        public string Subject { get; set; }
        public string Body { get; set; }
        public string AttachmentFile { get; set; }

        public MailHelper()
        {
            //MailServer - Represents the SMTP Server
            _host = ConfigurationManager.AppSettings["MailServer"];
            //Port- Represents the port number
            _port = int.Parse(ConfigurationManager.AppSettings["Port"]);
            //MailAuthUser and MailAuthPass - Used for Authentication for sending email
            _user = ConfigurationManager.AppSettings["MailAuthUser"];
            _pass = ConfigurationManager.AppSettings["MailAuthPass"];
            _ssl = Convert.ToBoolean(ConfigurationManager.AppSettings["EnableSSL"]);
        }

        public void Send()
        {
            try
            {
// We do not catch the error here... let it pass direct to the caller
                Attachment att = null;
                var message = new MailMessage(Sender, Recipient, Subject, Body) { IsBodyHtml = true };
                if (RecipientCC != null)
                {
                    message.Bcc.Add(RecipientCC);
                }
                var smtp = new SmtpClient(_host, _port);

                if (!String.IsNullOrEmpty(AttachmentFile))
                {
                    if (File.Exists(AttachmentFile))
                    {
                        att = new Attachment(AttachmentFile);
                        message.Attachments.Add(att);
                    }
                }

                if (_user.Length > 0 && _pass.Length > 0)
                {
                    smtp.UseDefaultCredentials = false;
                    smtp.Credentials = new NetworkCredential(_user, _pass);
                    smtp.EnableSsl = _ssl;
                }

                smtp.Send(message);

                if (att != null)
                    att.Dispose();
                message.Dispose();
                smtp.Dispose();
            }

            catch (Exception ex)
            {
            }
        }
    }

Step 2

Place the following code in the app settings of your application:

appSettings>
<add key=”MailServer” value=”smtp.gmail.com”/>
<add key=”Port” value=”587″/>
<add key=”EnableSSL” value=”true”/>
<add key=”EmailFromAddress” value=”[email protected]”/>
<add key=”MailAuthUser” value=”[email protected]”/>
<add key=”MailAuthPass” value=”xxxxxxxx”/>
</appSettings>

Step 3

If you don’t have authentication for sending emails you can pass the emtpy string in MailAuthUser and MailAuthPass.

<appSettings>
<add key=”MailServer” value=”smtp.gmail.com”/>
<add key=”Port” value=”587″/>
<add key=”EnableSSL” value=”true”/>
<add key=”EmailFromAddress” value=”[email protected]”/>
<add key=”MailAuthUser” value=””/>
<add key=”MailAuthPass” value=””/>
</appSettings>

USAGE

Add the following code snippet in your controller to call Mail Helper class for sending emails:

var MailHelper = new MailHelper
   {
      Sender = sender, //email.Sender,
      Recipient = useremail,
      RecipientCC = null,
      Subject = emailSubject,
      Body = messageBody
   };
 MailHelper.Send();

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