Add Field Variables to subject line

[CreateSean]

Add Field Variables to subject line

[i-just]

Hi, thanks for reaching out!

At the moment, that’s not possible via the plugin’s settings. The “Subject Text” will be prepended to the email’s Subject to flag that it comes from the Contact Form. So, if you have your “Subject Text” set to “New message from My Website” and the person filling out the form sets the subject to “About Something”, the subject will be: “New message from My Website - About Something”.

You can, however, manipulate the subject via Mailer::EVENT_BEFORE_SEND event (from a module or a plugin):

Event::on(Mailer::class, Mailer::EVENT_BEFORE_SEND, function(SendEvent $e) {
    $subject = $e->submission->subject;
    $settings = \craft\contactform\Plugin::getInstance()->getSettings();
    $e->message->setSubject("{$settings->prependSubject} - $subject - additional message");
});

I hope this helps!