Visual Basic.NET - Send Email using Gmail Account

Gmail SMTP server address is "". It requires SSL or TLS connection, and you should use your Gmail email address as the user name for ESMTP authentication. For example: your email is "", and then the user name should be "".

The following example codes demonstrate how to send email using Gmail SMTP server.


Before you can use the following sample codes, you should download the EASendMail Installer and install it on your machine at first.

Add Reference of EASendMail to Visual Basic.NET Project

To use EASendMail SMTP Component in your project, the first step is "Add reference of EASendMail to your project". Please create/open your project with Visual Studio.NET, then choose menu->"Project"->"Add Reference"->".NET"->"Browse...", and choose the EASendMail{version}.dll from your disk, click "Open"->"OK", the reference of EASendMail will be added to your project, and you can start to use EASendMail to send email in your Visual Basic.NET project.

add reference in c#

Because EASendMail has separate builds for .Net Framework, please refer to the following table and choose the correct dll.

Separate builds of run-time assembly for .Net Framework 1.1, 2.0, 3.5, 4.0 and .Net Compact Framework 2.0, 3.5.

File .NET Framework Version
EASendMail.dll Built with .NET Framework 1.1
It requires .NET Framework 1.1, 2.0, 3.5 or later version.
EASendMail20.dll Built with .NET Framework 2.0
It requires .NET Framework 2.0, 3.5 or later version.
EASendMail35.dll Built with .NET Framework 3.5
It requires .NET Framework 3.5 or later version.
EASendMaill40.dll Built with .NET Framework 4.0
It requires .NET Framework 4.0 or later version.
EASendMailCF20.dll Built with .NET Compact Framework 2.0
It requires .NET Compact Framework 2.0, 3.5 or later version.
EASendMailCF35.dll Built with .NET Compact Framework 3.5
It requires .NET Compact Framework 3.5 or later version.

C# | VB6 | Visual Basic.NET | Managed C++ | Visual C++ | Delphi

' The following example codes demonstrate sending email message using Gmail SMTP server.
' To get full sample projects, please download and install EASendMail on your machine.
' To run it correctly, please change SMTP server, user, password, sender, recipient value to yours

Imports EASendMail 'Add EASendMail Namespace

Module Module1
    Sub Main()
        Dim oMail As New SmtpMail("TryIt")
        Dim oSmtp As New SmtpClient()

        ' Your gmail email address
        oMail.From = ""

        ' Set recipient email address, please change it to yours
        oMail.To = ""

        ' Set email subject
        oMail.Subject = "test email from gmail account"

        ' Set email body
        oMail.TextBody = "this is a test email sent from VB.NET project with gmail"

        'Gmail SMTP server address
        Dim oServer As New SmtpServer("")

        ' If you want to use direct SSL 465 port,
        ' please add this line, otherwise TLS will be used.
        ' oServer.Port = 465

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

        ' Gmail user authentication should use your
        ' Gmail email address as the user name.
        ' For example: your email is "", then the user should be ""
        oServer.User = "gmailid"
        oServer.Password = "yourpassword"


            Console.WriteLine("start to send email over SSL ...")
            oSmtp.SendMail(oServer, oMail)
            Console.WriteLine("email was sent successfully!")

        Catch ep As Exception

            Console.WriteLine("failed to send email with the following error:")
        End Try

    End Sub
End Module


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