public event SmtpMessageSentEventHandler MessageSent

Public Event MessageSent As SmtpMessageSentEventHandler

using System;
using MailBee;
using MailBee.SmtpMail;

class Sample
{
    // MessageSent event handler.
    private static void OnMessageSent(object sender, SmtpMessageSentEventArgs e)
    {
        Console.WriteLine("Sent to: " + e.SuccessfulRecipients.ToString());
    }

    // The actual code.
    static void Main(string[] args)
    {
        Smtp mailer = new Smtp();

        // Get DNS servers from config file/OS settings.
        mailer.DnsServers.Autodetect();

        // Subscribe to the MessageSent event.
        mailer.MessageSent += new SmtpMessageSentEventHandler(OnMessageSent);

        // Send a message to 3 recipients on 2 domains.
        mailer.To.AsString = "user1@domain1.com, user2@domain1.com, user2@domain2.com";
        mailer.From.Email = "sender@domain.com";
        mailer.Subject = "Test message";
        mailer.Send();
    }
}

Imports System
Imports MailBee
Imports MailBee.SmtpMail

Class Sample
    ' DataSent event handler.
    Private Shared Sub OnMessageSent(ByVal sender As Object, ByVal e As SmtpMessageSentEventArgs)
        Console.WriteLine("Sent to: " & e.SuccessfulRecipients.ToString())
    End Sub

    ' The actual code.
    Shared Sub Main(ByVal args As String())
        Dim mailer As New Smtp

        ' Get DNS servers from config file/OS settings.
        mailer.DnsServers.Autodetect()

        ' Subscribe to the MessageSent event.
        AddHandler mailer.MessageSent, AddressOf OnMessageSent

        ' Send a message to 3 recipients on 2 domains.
        mailer.To.AsString = "user1@domain1.com, user2@domain1.com, user2@domain2.com"
        mailer.From.Email = "sender@domain.com"
        mailer.Subject = "Test message"
        mailer.Send()
    End Sub
End Class