Send Email using Yahoo in C#

In previous section, I introduced how to send email using Gmail account. In this section, I will introduce how to send email using Yahoo account in C#.

Introduction

Yahoo SMTP server address is smtp.mail.yahoo.com. It supports both Normal/Implicit SSL/Explicit SSL (TLS) connection to do user authentication, and you should use your Yahoo email address as the user name for ESMTP authentication.

For example: your email is myid@yahoo.com, and then the user name should be myid@yahoo.com.

If you want to use implicit SSL connection with Yahoo SMTP server, you must set the port to 465.

Server Port SSL/TLS
smtp.mail.yahoo.com 25, 587 TLS
smtp.mail.yahoo.com 465 SSL

Note

Remarks: All of samples in this section are based on first section: Send email in a simple C# project. To compile and run the following example codes successfully, please click here to learn how to create the test project and add reference of EASendMail to your project.

Important

If you got authentication error, you need to enable Allowing less secure apps in your Yahoo account. Although Yahoo supports OAUTH, but it doesn’t provide mail permission, so OAUTH is not a solution for Yahoo mail.

[C# - Send Email using Yahoo over Implicit SSL on 465 Port - Example]

The following example codes demonstrate how to send email using Yahoo account in C# over SSL 465 port.

Note

To get the full sample projects, please refer to Samples section.

using System;
using System.Collections.Generic;
using System.Text;
using EASendMail; //add EASendMail namespace
namespace mysendemail
{
    class Program
    {
        static void Main(string[] args)
        {
            SmtpMail oMail = new SmtpMail("TryIt");
            SmtpClient oSmtp = new SmtpClient();

            // Your yahoo email address
            oMail.From = "myid@yahoo.com";

            // Set recipient email address
            oMail.To = "support@emailarchitect.net";

            // Set email subject
            oMail.Subject = "test email from yahoo account";

            // Set email body
            oMail.TextBody = "this is a test email sent from c# project with yahoo.";

            // Yahoo SMTP server address
            SmtpServer oServer = new SmtpServer("smtp.mail.yahoo.com");

            // For example: your email is "myid@yahoo.com", then the user should be "myid@yahoo.com"
            oServer.User = "myid@yahoo.com";
            oServer.Password = "yourpassword";

            // Because yahoo deploys SMTP server on 465 port with implicit SSL connection.
            // So we should change the port to 465.
            oServer.Port = 465;

            // detect SSL type automatically
            oServer.ConnectType = SmtpConnectType.ConnectSSLAuto;

            try
            {
                Console.WriteLine("start to send email over SSL ...");
                oSmtp.SendMail(oServer, oMail);
                Console.WriteLine("email was sent successfully!");
            }
            catch (Exception ep)
            {
                Console.WriteLine("failed to send email with the following error:");
                Console.WriteLine(ep.Message);
            }
        }
    }
}

[C# - Send Email using Yahoo over Explicit SSL (TLS) on 25 or 587 Port - Example]

The following example codes demonstrate how to send email using Yahoo account in C# over TLS 25 port.

Note

To get the full sample projects, please refer to Samples section.

using System;
using System.Collections.Generic;
using System.Text;
using EASendMail; //add EASendMail namespace
namespace mysendemail
{
    class Program
    {
        static void Main(string[] args)
        {
            SmtpMail oMail = new SmtpMail("TryIt");
            SmtpClient oSmtp = new SmtpClient();

            // Your yahoo email address
            oMail.From = "myid@yahoo.com";

            // Set recipient email address
            oMail.To = "support@emailarchitect.net";

            // Set email subject
            oMail.Subject = "test email from yahoo account";

            // Set email body
            oMail.TextBody = "this is a test email sent from c# project with yahoo.";

            // Yahoo SMTP server address
            SmtpServer oServer = new SmtpServer("smtp.mail.yahoo.com");

            // For example: your email is "myid@yahoo.com", then the user should be "myid@yahoo.com"
            oServer.User = "myid@yahoo.com";
            oServer.Password = "yourpassword";

            // Set 25 port, if you want to use 587 port, please change 25 to 587
            oServer.Port = 25;

            // detect SSL/TLS type automatically
            oServer.ConnectType = SmtpConnectType.ConnectSSLAuto;

            try
            {
                Console.WriteLine("start to send email over SSL ...");
                oSmtp.SendMail(oServer, oMail);
                Console.WriteLine("email was sent successfully!");
            }
            catch (Exception ep)
            {
                Console.WriteLine("failed to send email with the following error:");
                Console.WriteLine(ep.Message);
            }
        }
    }
}

Next Section

At next section I will introduce how to send email using Hotmail/Outlook/Live/Office 365 account in C#.

Appendix

Comments

If you have any comments or questions about above example codes, please click here to add your comments.