SmtpSender added

Massmailer.Shared/Logic/Mailer.cs

@@ -0,0 +1,44 @@
+using MailKit.Net.Smtp;
+using Massmailer.Shared.Model;
+using MimeKit;
+using System;
+using System.Threading.Tasks;
+
+namespace Massmailer.Shared.Logic
+{
+    public class Mailer : IMailer
+    {
+        private readonly SmtpSettings smtpSettings;
+
+        public Mailer(SmtpSettings smtpSettings)
+        {
+            this.smtpSettings = smtpSettings;
+        }
+
+        public async Task SendMailAsync(string email, string subject, string body)
+        {
+            try
+            {
+                var message = new MimeMessage();
+                message.From.Add(new MailboxAddress(this.smtpSettings.SenderName, this.smtpSettings.SenderEmail));
+                message.To.Add(new MailboxAddress(email, email));
+                message.Subject = subject;
+                message.Body = new TextPart("html") { Text = body };
+
+                using (var client = new SmtpClient())
+                {
+                    client.ServerCertificateValidationCallback = (s, c, h, e) => true;
+
+                    await client.ConnectAsync(this.smtpSettings.Server, this.smtpSettings.Port, this.smtpSettings.UseSsl);
+                    await client.AuthenticateAsync(this.smtpSettings.Username, this.smtpSettings.Password);
+                    await client.SendAsync(message);
+                    await client.DisconnectAsync(true);
+                }
+            }
+            catch (Exception ex)
+            {
+                throw new InvalidOperationException(ex.Message);
+            }
+        }
+    }
+}