Enviar correo gmail

Dim email As String = "123@gmail.com"
        Dim password As String = "******"

        Dim server As New System.Net.Mail.SmtpClient
        Dim mail As New System.Net.Mail.MailMessage
        Dim attach As System.Net.Mail.Attachment = Nothing

        Try
            attach = New System.Net.Mail.Attachment(archivo)
            mail.Attachments.Add(attach)
            server.Credentials = New System.Net.NetworkCredential(email, password)
            server.Port = "587"
            server.Host = "smtp.gmail.com"
            server.EnableSsl = True

            mail.To.Add(email)
            mail.From = New System.Net.Mail.MailAddress(email, xrutempresa, System.Text.Encoding.UTF8)
            mail.Subject = xrutempresa & " Reporte " & Path.GetFileName(archivo)
            server.Send(mail)
            attach.Dispose()
        Catch ex As Exception
            attach.Dispose()
        End Try

correo pop3

servidor: pop.gmail.com
puerto: 995
SSL: SI

https://support.google.com/mail/troubleshooter/6323470#ts=1665162