Node.js

Scan for Emails with Attachments and Save Attachments to Files

Scan for emails with attachments and save attachments. Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

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

    var imap = new chilkat.Imap();

    // Connect to an IMAP server.
    // Use TLS
    imap.Ssl = true;
    imap.Port = 993;
    success = imap.Connect("imap.example.com");
    if (success == false) {
        console.log(imap.LastErrorText);
        return;
    }

    // Login
    success = imap.Login("myLogin","myPassword");
    if (success == false) {
        console.log(imap.LastErrorText);
        return;
    }

    // Select an IMAP mailbox
    success = imap.SelectMailbox("Inbox");
    if (success == false) {
        console.log(imap.LastErrorText);
        return;
    }

    // We can choose to fetch UIDs or sequence numbers.
    var fetchUids = true;

    // Get the message IDs of all the emails in the mailbox
    var messageSet = new chilkat.MessageSet();
    success = imap.QueryMbx("ALL",fetchUids,messageSet);
    if (success == false) {
        console.log(imap.LastErrorText);
        return;
    }

    // Fetch the email headers into a bundle object:
    var bundle = new chilkat.EmailBundle();
    var headersOnly = true;
    success = imap.FetchMsgSet(headersOnly,messageSet,bundle);
    if (success == false) {
        console.log(imap.LastErrorText);
        return;
    }

    // Scan for emails with attachments, and save the attachments
    // to a sub-directory.
    var fullEmail = new chilkat.Email();
    var emailHeader = new chilkat.Email();
    var i = 0;
    while (i < bundle.MessageCount) {
        // The bundle contains email headers..
        bundle.EmailAt(i,emailHeader);

        // Does this email have attachments?
        // Use GetMailNumAttach because the attachments
        // are not actually in the email object because
        // we only downloaded headers.
        var numAttach = imap.GetMailNumAttach(emailHeader);

        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.

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

            success = imap.FetchEmail(false,uid,true,fullEmail);
            if (success == false) {
                console.log(imap.LastErrorText);
                return;
            }

            success = fullEmail.SaveAllAttachments("attachmentsDir");

            var j;
            for (j = 0; j <= numAttach - 1; j++) {
                var filename = imap.GetMailAttachFilename(emailHeader,j);
                console.log(filename);
            }

        }

        i = i+1;
    }

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

}

chilkatExample();