Send Attachments with Amazon-SES

Question

I'm searching for an working C# example to send attachments with Amazon-SES.

After reading that Amazon-SES now supports sending attachments I was searching for an C# example but was unable to find one.

Answer 1

I think that using AWS SDK for .NET and MimeKit is very easy and clean solution. You can send e-mails with attachments via SES API (instead of SMTP).

You can write MimeMessage directly to MemoryStream and then use it with SES SendRawEmail:

using Amazon.SimpleEmail; using Amazon.SimpleEmail.Model; using Amazon; using Amazon.Runtime; using MimeKit;  private static BodyBuilder GetMessageBody() {     var body = new BodyBuilder()     {         HtmlBody = @"<p>Amazon SES Test body</p>",         TextBody = "Amazon SES Test body",     };     body.Attachments.Add(@"c:\attachment.txt");     return body; }  private static MimeMessage GetMessage() {     var message = new MimeMessage();     message.From.Add(new MailboxAddress("Foo Bar", "[email protected]"));     message.To.Add(new MailboxAddress(string.Empty, "[email protected]"));     message.Subject = "Amazon SES Test";     message.Body = GetMessageBody().ToMessageBody();     return message; }  private static MemoryStream GetMessageStream() {     var stream = new MemoryStream();     GetMessage().WriteTo(stream);     return stream; }  private void SendEmails() {     var credentals = new BasicAWSCredentials("<aws-access-key>", "<aws-secret-key>");      using (var client = new AmazonSimpleEmailServiceClient(credentals, RegionEndpoint.EUWest1))     {         var sendRequest = new SendRawEmailRequest { RawMessage = new RawMessage(GetMessageStream()) };         try         {             var response = client.SendRawEmail(sendRequest);             Console.WriteLine("The email was sent successfully.");         }         catch (Exception e)         {             Console.WriteLine("The email was not sent.");             Console.WriteLine("Error message: " + e.Message);         }     } } 

Answer 2

public Boolean SendRawEmail(String from, String to, String cc, String Subject, String text, String html, String replyTo, string attachPath)     {         AlternateView plainView = AlternateView.CreateAlternateViewFromString(text, Encoding.UTF8, "text/plain");         AlternateView htmlView = AlternateView.CreateAlternateViewFromString(html, Encoding.UTF8, "text/html");          MailMessage mailMessage = new MailMessage();          mailMessage.From = new MailAddress(from);          List<String> toAddresses = to.Replace(", ", ",").Split(',').ToList();          foreach (String toAddress in toAddresses)         {             mailMessage.To.Add(new MailAddress(toAddress));         }          List<String> ccAddresses = cc.Replace(", ", ",").Split(',').Where(y => y != "").ToList();          foreach (String ccAddress in ccAddresses)         {             mailMessage.CC.Add(new MailAddress(ccAddress));         }          mailMessage.Subject = Subject;         mailMessage.SubjectEncoding = Encoding.UTF8;          if (replyTo != null)         {             mailMessage.ReplyToList.Add(new MailAddress(replyTo));         }          if (text != null)         {             mailMessage.AlternateViews.Add(plainView);         }          if (html != null)         {             mailMessage.AlternateViews.Add(htmlView);         }          if (attachPath.Trim() != "")         {             if (System.IO.File.Exists(attachPath))             {                 System.Net.Mail.Attachment objAttach = new System.Net.Mail.Attachment(attachPath);                 objAttach.ContentType = new ContentType("application/octet-stream");                  System.Net.Mime.ContentDisposition disposition = objAttach.ContentDisposition;                 disposition.DispositionType = "attachment";                 disposition.CreationDate = System.IO.File.GetCreationTime(attachPath);                 disposition.ModificationDate = System.IO.File.GetLastWriteTime(attachPath);                 disposition.ReadDate = System.IO.File.GetLastAccessTime(attachPath);                 mailMessage.Attachments.Add(objAttach);             }         }          RawMessage rawMessage = new RawMessage();          using (MemoryStream memoryStream = ConvertMailMessageToMemoryStream(mailMessage))         {             rawMessage.WithData(memoryStream);         }          SendRawEmailRequest request = new SendRawEmailRequest();         request.WithRawMessage(rawMessage);          request.WithDestinations(toAddresses);         request.WithSource(from);          AmazonSimpleEmailService ses = AWSClientFactory.CreateAmazonSimpleEmailServiceClient(ConfigurationManager.AppSettings.Get("AccessKeyId"), ConfigurationManager.AppSettings.Get("SecretKeyId"));          try         {             SendRawEmailResponse response = ses.SendRawEmail(request);             SendRawEmailResult result = response.SendRawEmailResult;             return true;         }         catch (AmazonSimpleEmailServiceException ex)         {             return false;         }     }     public static MemoryStream ConvertMailMessageToMemoryStream(MailMessage message)     {         Assembly assembly = typeof(SmtpClient).Assembly;         Type mailWriterType = assembly.GetType("System.Net.Mail.MailWriter");         MemoryStream fileStream = new MemoryStream();         ConstructorInfo mailWriterContructor = mailWriterType.GetConstructor(BindingFlags.Instance | BindingFlags.NonPublic, null, new[] { typeof(Stream) }, null);         object mailWriter = mailWriterContructor.Invoke(new object[] { fileStream });         MethodInfo sendMethod = typeof(MailMessage).GetMethod("Send", BindingFlags.Instance | BindingFlags.NonPublic);         sendMethod.Invoke(message, BindingFlags.Instance | BindingFlags.NonPublic, null, new[] { mailWriter, true }, null);         MethodInfo closeMethod = mailWriter.GetType().GetMethod("Close", BindingFlags.Instance | BindingFlags.NonPublic);         closeMethod.Invoke(mailWriter, BindingFlags.Instance | BindingFlags.NonPublic, null, new object[] { }, null);         return fileStream;     } 

Found that here

Update: A method signature has changed in .NET 4.5, which breaks the above: Getting System.Net.Mail.MailMessage as a MemoryStream in .NET 4.5 beta