Java

Save an Email to a .eml File

Demonstrates the Chilkat Email.SaveEml method, which converts the email object to EML and saves it to a file. An EML file contains the complete RFC822/MIME message — headers, bodies, related items, and attachments. This example builds a message and saves it.

Background: Saving as .eml writes the message in the universal MIME format that virtually every mail client can open, making it ideal for archiving, sharing, or handing a message to another program. It is the counterpart to LoadEml. A saved .eml also retains Chilkat's CKX- metadata headers (a way to store your own metadata with the email; they are always stripped before an email is sent), so .eml is the recommended way to persist a message even within Chilkat-based software. A separate Chilkat XML format (SaveXml) exists as an alternative, but offers no metadata advantage over .eml.

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Java

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    boolean success = false;

    //  Demonstrates the SaveEml method, which converts the email object to EML and saves it to
    //  a file.  An EML file contains the complete RFC822/MIME message, including headers,
    //  bodies, related items, and attachments.

    CkEmail email = new CkEmail();
    email.put_Subject("Save as EML");
    email.put_From("alice@example.com");
    email.AddTo("Bob","bob@example.com");
    email.put_Body("Hello, this message will be saved as a .eml file.");

    //  Save the email to a .eml file.
    success = email.SaveEml("qa_output/message.eml");
    if (success == false) {
        System.out.println(email.lastErrorText());
        return;
        }

    System.out.println("Saved to message.eml.");

    //  Note: The path "qa_output/..." is a relative local filesystem path,
    //  relative to the current working directory of the running application.
  }
}