Scan for Emails with Attachments and Save Attachments to Files

Scan for emails with attachments and save attachments.

Download Chilkat Java Library

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[])
  {
    CkImap imap = new CkImap();

    boolean success;

    // Anything unlocks the component and begins a fully-functional 30-day trial.
    success = imap.UnlockComponent("Anything for 30-day trial");
    if (success != true) {
        System.out.println(imap.lastErrorText());
        return;
    }

    // Connect to an IMAP server.
    success = imap.Connect("mail.chilkatsoft.com");
    if (success != true) {
        System.out.println(imap.lastErrorText());
        return;
    }

    // Login
    success = imap.Login("admin@chilkatsoft.com","*myPassword5*");
    if (success != true) {
        System.out.println(imap.lastErrorText());
        return;
    }

    // Select an IMAP mailbox
    success = imap.SelectMailbox("Inbox");
    if (success != true) {
        System.out.println(imap.lastErrorText());
        return;
    }

    CkMessageSet messageSet;
    // We can choose to fetch UIDs or sequence numbers.
    boolean fetchUids;
    fetchUids = true;

    // Get the message IDs of all the emails in the mailbox
    messageSet = imap.Search("ALL",fetchUids);
    if (messageSet == null ) {
        System.out.println(imap.lastErrorText());
        return;
    }

    // Fetch the email headers into a bundle object:
    CkEmailBundle bundle;
    bundle = imap.FetchHeaders(messageSet);
    if (bundle == null ) {

        System.out.println(imap.lastErrorText());
        return;
    }

    // Scan for emails with attachments, and save the attachments
    // to a sub-directory.
    int i;
    for (i = 0; i <= bundle.get_MessageCount() - 1; i++) {
        CkEmail email;
        email = bundle.GetEmail(i);

        // Does this email have attachments?
        // Use GetMailNumAttach because the attachments
        // are not actually in the email object because
        // we only downloaded headers.
        // (Had we downloaded the full emails by
        // calling mailman.FetchBundle, we could look
        // at the email object's NumAttachments property.)
        int numAttach;
        numAttach = imap.GetMailNumAttach(email);

        if (numAttach > 0) {
            // Download the entire email and save the
            // attachments. (Remember, we
            // need to download the entire email because
            // only the headers were previously downloaded.
            // If the entire emails were downloaded by
            // calling FetchBundle instead of FetchHeaders,
            // this would not be necessary.

            // The ckx-imap-uid header field is added when
            // headers are downloaded.  This makes it possible
            // to get the UID from the email object.
            String uidStr;
            uidStr = email.getHeaderField("ckx-imap-uid");
            int uid;
            uid = Integer.parseInt(uidStr);

            CkEmail fullEmail;
            fullEmail = imap.FetchSingle(uid,true);
            if (!(fullEmail == null )) {
                fullEmail.SaveAllAttachments("attachmentsDir");

            }

            int j;
            for (j = 0; j <= numAttach - 1; j++) {
                String filename;
                filename = imap.getMailAttachFilename(email,j);
                System.out.println(filename);
            }

        }

    }

    // Disconnect from the IMAP server.
    imap.Disconnect();


  }
}