Node.js

Imap.GetMailSize vs Email.Size

Shows how to get the total size of an email, as well as the sizes of the attachments. This can be done when either full-emails or headers-only are downloaded. 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("****","****");
    if (success == false) {
        console.log(imap.LastErrorText);
        return;
    }

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

    // Get the message IDs of all the emails in the mailbox
    // We can choose to fetch UIDs or sequence numbers.
    var fetchUids = true;
    var messageSet = new chilkat.MessageSet();
    success = imap.QueryMbx("ALL",fetchUids,messageSet);
    if (success == false) {
        console.log(imap.LastErrorText);
        return;
    }

    // When downloading headers, each email object contains
    // (obviously) the headers, but the body will be missing.
    // 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 and display information about each:
    var email = new chilkat.Email();
    var i = 0;
    var j = 0;
    var numEmails = bundle.MessageCount;
    while (i < numEmails) {
        bundle.EmailAt(i,email);

        // Display the From and Subject
        console.log(email.From);
        console.log(email.Subject);

        // Display the recipients:
        j = 0;
        while (j < email.NumTo) {
            console.log("TO: " + email.GetToName(j) + ", " + email.GetToAddr(j));
            j = j+1;
        }

        j = 0;
        while (j < email.NumCC) {
            console.log("CC: " + email.GetCcName(j) + ", " + email.GetCcAddr(j));
            j = j+1;
        }

        // Show the total size of the email, including body and attachments:
        console.log(email.Size);

        // When a full email is downloaded, we would use the
        // email.NumAttachments property in conjunction with the
        // email.GetMailAttach* methods.
        // However, when an email object contains only the header,
        // we need to access the attachment info differently:
        var numAttach = imap.GetMailNumAttach(email);
        j = 0;
        while (j < numAttach) {
            console.log(imap.GetMailAttachFilename(email,j));
            var attachSize = imap.GetMailAttachSize(email,j);
            console.log("    size = " + attachSize + " bytes");
            j = j+1;
        }

        console.log("--");

        i = i+1;
    }

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

}

chilkatExample();