Java

Copy Email from one IMAP Account to Another

See more IMAP Examples

Demonstrates how to copy the email in a mailbox from one account to another. Chilkat2 Java

import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.FileAccess;
import com.chilkatsoft.chilkat2.Imap;
import com.chilkatsoft.chilkat2.MessageSet;
import com.chilkatsoft.chilkat2.StringBuilder;

public class ChilkatExample {

    public static void main(String[] args) {
        Imap imapSrc = new Imap();

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

        // Connect to our source IMAP server.
        imapSrc.setSsl(true);
        imapSrc.setPort(993);
        try {
            imapSrc.connect("MY-IMAP-DOMAIN");

            // Login to the source IMAP server
            imapSrc.login("MY-IMAP-LOGIN", "MY-IMAP-PASSWORD");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        Imap imapDest = new Imap();

        // Connect to our destination IMAP server.
        imapDest.setSsl(true);
        imapDest.setPort(993);
        try {
            imapDest.connect("MY-IMAP-DOMAIN2");

            // Login to the destination IMAP server
            imapDest.login("MY-IMAP-LOGIN2", "MY-IMAP-PASSWORD2");

            // Select a source IMAP mailbox on the source IMAP server
            imapSrc.selectMailbox("Inbox");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // Get the set of UIDs for all emails on the source server.
ERROR: Method not in Chilkat2 Java: Imap.Search
        MessageSet mset = imapSrc.ERROR();
        if (!imapSrc.getLastMethodSuccess()) {
            System.out.println(imapSrc.getLastErrorText());
            return;
        }

        // Load the complete set of UIDs that were previously copied.
        // We dont' want to copy any of these to the destination.
        FileAccess fac = new FileAccess();
        MessageSet msetAlreadyCopied = new MessageSet();
        String strMsgSet;
        try {
            strMsgSet = fac.readEntireTextFile("qa_cache/saAlreadyLoaded.txt", "utf-8");
        } catch (ChilkatException e) {
            strMsgSet = null;
        }
        if (strMsgSet != null) {
            msetAlreadyCopied.fromCompactString(strMsgSet);
        }

        int numUids = mset.getCount();
        StringBuilder sbFlags = new StringBuilder();

        int i = 0;
        while (i < numUids) {
            // If this UID was not already copied...
            int uid = (int) mset.getId(i);
            if (!msetAlreadyCopied.containsId(uid)) {
                System.out.println("copying " + uid + "...");

                // Get the flags.
                String flags;
                String mimeStr;
                try {
                    flags = imapSrc.fetchFlags(uid, true);

                    sbFlags.setString(flags);

                    // Get the MIME of this email from the source.
                    mimeStr = imapSrc.fetchSingleAsMime(uid, true);
                } catch (ChilkatException e) {
                    System.out.println(e.getLastErrorText());
                    return;
                }

                boolean seen = sbFlags.contains("\\Seen", false);
                boolean flagged = sbFlags.contains("\\Flagged", false);
                boolean answered = sbFlags.contains("\\Answered", false);
                boolean draft = sbFlags.contains("\\Draft", false);

                try {
                    imapDest.appendMimeWithFlags("Inbox", mimeStr, seen, flagged, answered, draft);
                } catch (ChilkatException e) {
                    System.out.println(e.getLastErrorText());
                    return;
                }

                // Update msetAlreadyCopied with the uid just copied.
                msetAlreadyCopied.insertId(uid);

                // Save at every iteration just in case there's a failure..
                strMsgSet = msetAlreadyCopied.toCompactString();
                fac.writeEntireTextFile("qa_cache/saAlreadyLoaded.txt", strMsgSet, "utf-8", false);
            }

            i = i + 1;
        }

        mset.close();

        // Disconnect from the IMAP servers.
        imapSrc.disconnect();
        imapDest.disconnect();
    }
}