Java

Count the Messages in a multipart/digest Email

Demonstrates the read-only Chilkat Email.NumDigests property, which is the number of message/rfc822 parts contained within a multipart/digest enclosure. If no such enclosure exists, the value is 0. Digest indexes are zero-based; use GetDigestEmail to retrieve an individual bundled message as its own Email object. This example loads a digest email and lists each message's subject.

Background: A multipart/digest is a way to package many separate emails inside one carrier message — historically used by mailing lists to send a single daily "digest" containing all of that day's posts. Each bundled item is a complete message/rfc822 email with its own headers and body. This differs from NumAttachedMessages, which counts nested messages attached to an ordinary email rather than the members of a digest enclosure.

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Chilkat2 Java

import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.Email;

public class ChilkatExample {

    public static void main(String[] args) {
        // Demonstrates the read-only Email.NumDigests property, which is the number of
        // message/rfc822 parts contained within a multipart/digest enclosure.  If there is no
        // multipart/digest enclosure, the value is 0.  Digest indexes are zero-based.

        Email email = new Email();

        // Load a multipart/digest email (a single email that bundles many messages).
        try {
            email.loadEml("qa_data/eml/digest.eml");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        int n = email.getNumDigests();
        System.out.println("NumDigests = " + n);

        // Retrieve each bundled message as its own Email object.
        Email digestEmail = new Email();
        for (int i = 0; i < n; i++) {
            email.getDigestEmail(i, digestEmail);
            System.out.println("Digest " + i + " subject: " + digestEmail.getSubject());
        }

        // Note: Paths such as "qa_data/..." are relative local filesystem paths,
        // relative to the current working directory of the running application.
    }
}