Sending mails works

Massmailer.Shared/Events/MailSentEvent.cs

@@ -0,0 +1,17 @@
+using System;
+
+namespace Massmailer.Shared.Events
+{
+    public class MailSentEvent
+    {
+        public MailSentEvent(string recipient, DateTime timestamp)
+        {
+            this.Recipient = recipient;
+            this.Timestamp = timestamp;
+        }
+
+        public string Recipient { get; private set; }
+
+        public DateTime Timestamp { get; private set; }
+    }
+}