Sending mails works

Massmailer.UI/Views/MainView.xaml

@@ -0,0 +1,12 @@
+<Window x:Class="Massmailer.UI.MainView"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:local="clr-namespace:Massmailer.UI"
+        mc:Ignorable="d"
+        Title="MainWindow" Height="450" Width="800">
+    <Grid>
+        <Button x:Name="BtnSend" Click="Button_Click" Content="Send"/>
+    </Grid>
+</Window>

Massmailer.UI/Views/MainView.xaml.cs

@@ -0,0 +1,71 @@
+using Massmailer.Shared.Events;
+using Massmailer.Shared.Logic;
+using Massmailer.Shared.Model;
+using PubSub;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Navigation;
+using System.Windows.Shapes;
+
+namespace Massmailer.UI
+{
+    /// <summary>
+    /// Interaction logic for MainWindow.xaml
+    /// </summary>
+    public partial class MainView : Window
+    {
+        private readonly Hub hub = new Hub();
+
+        public MainView()
+        {
+            this.InitializeComponent();
+            this.hub.Subscribe<MailSentEvent>(this.MailSentEventHandler);
+        }
+
+        private async void Button_Click(object sender, RoutedEventArgs e)
+        {
+            var smtpSettings = new SmtpSettings
+            {
+                Server = "localhost",
+                Port = 25,
+                Username = "test@test.local",
+                Password = "asdf33asdf",
+                UseSsl = false,
+                SenderEmail = "test@test.local",
+                SenderName = "Massmailer Test",
+                MaxSendRate = 60
+            };
+            var mailer = new Mailer(smtpSettings, this.hub);
+            var recipients = new List<string>
+            {
+                "1@test.local",
+                "2@test.local",
+                "3@test.local",
+                "4@test.local",
+                "5@test.local",
+                "6@test.local",
+                "7@test.local",
+                "8@test.local",
+                "9@test.local",
+                "10@test.local"
+            };
+
+            await mailer.SendMailsAsync(recipients, "Hello World Subject", "Hello World Body");
+        }
+
+        private void MailSentEventHandler(MailSentEvent mailSentEvent)
+        {
+            this.BtnSend.Content = $"mail sent: {mailSentEvent.Recipient} at {mailSentEvent.Timestamp}";
+        }
+    }
+}