Node.js

Rename Email Attachments After Adding

Demonstrates how to rename email attachments after adding but before sending. 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 mailman = new chilkat.MailMan();

    mailman.SmtpHost = "smtp.my-mail-server.com";
    mailman.SmtpUsername = "MY_SMTP_USERNAME";
    mailman.SmtpPassword = "MY_SMTP_PASSWORD";
    mailman.SmtpSsl = true;
    mailman.SmtpPort = 465;

    var email = new chilkat.Email();

    email.Subject = "This is a test";
    email.Body = "This is a test";
    email.From = "Chilkat Support <support@chilkatsoft.com>";
    success = email.AddTo("Chilkat Admin","admin@chilkatsoft.com");
    // To add more recipients, call AddTo, AddCC, or AddBcc once per recipient.

    // Add some attachments.
    // The AddFileAttachment method returns the value of the content-type it chose for the attachment.
    var contentType = email.AddFileAttachment("qa_data/jpg/starfish.jpg");
    if (email.LastMethodSuccess !== true) {
        console.log(email.LastErrorText);
        return;
    }

    contentType = email.AddFileAttachment("qa_data/pdf/fishing.pdf");
    if (email.LastMethodSuccess !== true) {
        console.log(email.LastErrorText);
        return;
    }

    // If we save the email to a .eml, we can examine in a text editor.
    success = email.SaveEml("qa_output/e1.eml");
    if (success == false) {
        console.log(email.LastErrorText);
        console.log("Failed to save .eml");
        return;
    }

    // We see the following in the e1.eml
    // Notice that Chilkat replaced the full path with just the filename.
    // The full local path is not part of the email that gets sent..

    // ...
    // --------------020807050607070004010609
    // Content-Type: image/jpeg; name="starfish.jpg"
    // Content-Transfer-Encoding: base64
    // Content-Disposition: attachment; filename="starfish.jpg"
    // 
    // ...
    // --------------020807050607070004010609
    // Content-Type: application/pdf; name="fishing.pdf"
    // Content-Transfer-Encoding: base64
    // Content-Disposition: attachment; filename="fishing.pdf"
    // ...

    // Before sending, each filename can be changed within the email object.
    // For example:
    success = email.SetAttachmentFilename(0,"orange_starfish.jpg");
    success = email.SetAttachmentFilename(1,"tuna_fishing.pdf");

    // Look at the new MIME source of the email in a  text editor...
    success = email.SaveEml("qa_output/e2.eml");
    if (success == false) {
        console.log(email.LastErrorText);
        console.log("Failed to save .eml");
        return;
    }

    // You'll see this:

    // ...
    // --------------020807050607070004010609
    // Content-Type: image/jpeg; name="orange_starfish.jpg"
    // Content-Transfer-Encoding: base64
    // Content-Disposition: attachment; filename="orange_starfish.jpg"
    // 
    // ...
    // --------------020807050607070004010609
    // Content-Type: application/pdf; name="tuna_fishing.pdf"
    // Content-Transfer-Encoding: base64
    // Content-Disposition: attachment; filename="tuna_fishing.pdf"
    // ...

    // Send the email with the updated filenames..
    success = mailman.SendEmail(email);
    if (success !== true) {
        console.log(mailman.LastErrorText);
        return;
    }

    success = mailman.CloseSmtpConnection();
    if (success !== true) {
        console.log("Connection to SMTP server not closed cleanly.");
    }

    console.log("Mail with attachments sent!");

}

chilkatExample();