Frequently Asked Questions

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Please click on the link with question to see the answer:

Q: Is it possible to parse a message, update it and then save it back to disk and/or email it?

Q: Need more information about licensing. For Development license, Server license or Side license?

Q: Can the component re-encode (into MHTML) outgoing mail (with embedded and external attachments).

Q: How can I skip all attachments? I am only interested in the visible text...

A: Please use sample code below that demonstrating how to do this:

public void test_temp() {
	string mimeMsg = "paste you mime message here!";
	Stream mimeMsgStream = new MemoryStream( Encoding.ASCII.GetBytes(mimeMsg) );
	WriteTextBodies( new MimeMessage(mimeMsgStream) );
}
public void WriteTextBodies(MimeMessage msg) {
	WriteTextBodiesRecursive(msg);
}
protected void WriteTextBodiesRecursive(Entity e)  {
	if (e.Body is Multipart) {
		Multipart multipart =(Multipart) e.Body; 
		IList parts = multipart.BodyParts;

		for (int i=0; i < parts.Count; i++) {
			WriteTextBodiesRecursive( (Entity)parts[i] );
		}
	} else if (e.Body is MimeMessage) {
		WriteTextBodiesRecursive( (MimeMessage)e.Body );
	} else {
		IBody b = e.Body;
		if (b is ITextBody) {
			Console.WriteLine("-----textbody---\r\n{0}\r\n\r\n", ((ITextBody)b).Reader.ReadToEnd() );
		}
	}
}

Q: Does the library support "multipart/x-mixed-replace" content type? I want to parse infinite MIME stream and catch events
when new part of "multipart/x-mixed-replace" multipart body is received.

Q: Does the library compile and function 100% if compiled against Mono 1.0+? If not, do you have a Linux version in C/C++?

Q: Are there any utilities to parse the "From" field to extract eg the ip address?

Q: Do we need to specifically dispose of any objects to avoid memory leaks?

Q: How do I find the text/plain message and the Header Data such as From/To etc?.

A: You can work directly with MimeMessage structure. Following code illustrates how you can work with structured header data: 
  
  MimeMessage msg = new MimeMessage(msgStream);
  MimeField fromFld = message.Header.GetField(MimeField.From);
  if (fromFld is MailboxListField) {
      // write first email domain
      Console.WriteLine( ((MailboxListField)fromFld).MailboxList[0].Domain);
  }

Q: How can I iterate through header fields looking for eg IsFrom or specific name and then use the field body?

Q: If I want to read the attachment, is the decoding (eg from base 64) carried out for me or will I have to do this? Similarly,
when reading the body will the reader take into account the specified encoding?

Q: Is there a way to override the charset of a MimeMessage (particularly the HTML and text parts) with an arbitrary charset?

  A: Yes, there is a way to change default charset (is taken from 'Content-Type' header). To do this

1. 'Content-Type' header in the body part with text body should be changed to new one
2. Current text body context should be copied into Stream with new encoding
3. Old body part body should be replaced with new one (using new Stream and new encoding) 

Following code illustrates these steps:

MimeMessage m;
// lets assume that we wanna change charset in first text part of multipart message
BodyPart bp = ((Multipart)m.Body).BodyParts[0] as BodyPart;
bp.Header.ChangeField(MimeField.ContentType, MimeField.Parse(MimeField.ContentType, "text/html; charset=koi8-r") );

string bodyContent = ((ITextBody)bp.Body).Reader.ReadToEnd();
MemoryStream bodyStream = new MemoryStream();
StreamWriter bodyStreamWr = new StreamWriter(bodyStream, bp.CurrentEncoding);
bodyStreamWr.Write(bodyContent);
bp.Body = new MemoryTextBody(bodyStream, bp.Charset);