Node.js

Process New Email by Scanning for Senders

Scan email and save application-selected emails to EML files with unique filenames. Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

    //  This example assumes 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;

    //  Fetch messages from the mailbox using a search criteria.
    //  This example finds NEW emails: these are emails that have the RECENT flag set, but not the SEEN flag:
    var messageSet = new chilkat.MessageSet();
    success = imap.QueryMbx("NEW",fetchUids,messageSet);
    if (success == false) {
        console.log(imap.LastErrorText);
        return;
    }

    //  This example will download headers, and then download
    //  the full email for those emails sent from a contact
    //  in our database.

    //  When downloading headers, each email object contains
    //  (obviously) the headers, but the body will be missing.
    //  Also, attachments will not be included.  However, it is
    //  possible to get information about the attachments
    //  as well as the complete size of the email.
    var bundle = new chilkat.EmailBundle();
    var headersOnly = true;
    success = imap.FetchMsgSet(headersOnly,messageSet,bundle);
    if (success == false) {
        console.log(imap.LastErrorText);
        return;
    }

    //  Loop over the email objects...
    var emailHeader = new chilkat.Email();
    var fullEmail = new chilkat.Email();
    var i = 0;
    var numEmails = bundle.MessageCount;
    while (i < numEmails) {
        bundle.EmailAt(i,emailHeader);

        //  The sender's email address and name are available
        //  in the From, FromAddress, and FromName properties.
        //  If the sender is "Chilkat Support <support@chilkatsoft.com",
        //  then the From property will hold the entire string.
        //  the FromName property contains"Chilkat Support",
        //  and the FromAddress property contains "support@chilkatsoft.com";
        console.log(emailHeader.From);
        console.log(emailHeader.FromAddress);
        console.log(emailHeader.FromName);

        //  Assume at this point your code checks to see if the sender
        //  is one in your contacts database.  If so, this is
        //  the code you would write to download the entire
        //  email and save it to a file.

        //  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;
        }

        //  You can use the GenerateFilename method to
        //  generate a unique filename...
        var filename = fullEmail.GenerateFilename();

        //  SaveEml saves the entire email, including attachments.
        success = fullEmail.SaveEml(filename);

        console.log("--");

        i = i+1;
    }

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

}

chilkatExample();