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Send Email using Yahoo in VB.NET

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 VB.NET.

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 VB.NET 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. Or you can generate App Passwords and use this app password instead of your user password.

Although Yahoo supports OAUTH, but it doesn’t provide mail permission, so OAUTH is not a solution for Yahoo mail.

[VB.NET - Send Email using Yahoo over Implicit SSL on 465 Port - Example]

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

Note

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

Imports EASendMail 'Add EASendMail namespace

Module Module1

    Sub Main()

        Try
            Dim oMail As New SmtpMail("TryIt")
            ' Your Yahoo email address
            oMail.From = "myid@yahoo.com"
            ' Set recipient email address, please change it to yours
            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 VB.NET project with yahoo"

            ' Yahoo SMTP server address
            Dim oServer As 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/TLS type automatically
            oServer.ConnectType = SmtpConnectType.ConnectSSLAuto

            Console.WriteLine("start to send email over SSL ...")

            Dim oSmtp As New SmtpClient()
            oSmtp.SendMail(oServer, oMail)

            Console.WriteLine("email was sent successfully!")
        Catch ep As Exception
            Console.WriteLine("failed to send email with the following error:")
            Console.WriteLine(ep.Message)
        End Try

    End Sub

End Module

[VB.NET - 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 VB.NET over TLS 587 port.

Note

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

Imports EASendMail 'Add EASendMail namespace

Module Module1

    Sub Main()

        Try
            Dim oMail As New SmtpMail("TryIt")
            ' Your Yahoo email address
            oMail.From = "myid@yahoo.com"
            ' Set recipient email address, please change it to yours
            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 VB.NET project with yahoo"

            ' Yahoo SMTP server address
            Dim oServer As 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 587 port, if you want to use 25 port, please change 587 to 25
            oServer.Port = 587

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

            Console.WriteLine("start to send email over SSL ...")

            Dim oSmtp As New SmtpClient()
            oSmtp.SendMail(oServer, oMail)

            Console.WriteLine("email was sent successfully!")
        Catch ep As Exception
            Console.WriteLine("failed to send email with the following error:")
            Console.WriteLine(ep.Message)
        End Try

    End Sub

End Module

TLS 1.2

TLS is the successor of SSL, more and more SMTP servers require TLS 1.2 encryption now.

If your operating system is Windows XP/Vista/Windows 7/Windows 2003/2008/2008 R2/2012/2012 R2, and you got connection error with SSL/TLS connection, you need to enable TLS 1.2 protocol in your operating system like this:

Enable TLS 1.2 on Windows XP/Vista/7/10/Windows 2008/2008 R2/2012

Next Section

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

Appendix

Comments

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

See Also