(Java) IMAP Download All Email One at a Time

Demonstrates how to download every email in an IMAP mailbox one at a time as a MIME string or as an email object. (The MIME contains the full contents of the email including all attachments.)

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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();

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // Connect to an IMAP server.
    // Use TLS
    imap.put_Ssl(true);
    imap.put_Port(993);
    boolean success = imap.Connect("imap.someMailServer.com");
    if (success != true) {
        System.out.println(imap.lastErrorText());
        return;
        }

    // Login
    success = imap.Login("myLogin","myPassword");
    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;
        }

    // Once the mailbox is selected, the NumMessages property
    // will contain the number of messages in the mailbox.
    // You may loop from 1 to NumMessages to
    // fetch each message by sequence number.

    boolean bUid = false;
    String mimeStr;
    int i;
    int n = imap.get_NumMessages();
    for (i = 1; i <= n; i++) {

        // Download the email by sequence number.
        mimeStr = imap.fetchSingleAsMime(i,bUid);

        // ... your application may process each MIME string...
        }

    // An alternative is to download each email in the form of an
    // email object, like this:
    CkEmail email;
    for (i = 1; i <= n; i++) {

        // Download the email by sequence number.
        email = imap.FetchSingle(i,bUid);

        // ... your application may process the email object...

        }

    // Disconnect from the IMAP server.
    success = imap.Disconnect();
  }
}