[Gravity mails with Woo Styling] Set the header, footer and body styling within Gravity Mails to WooCommerce Mails #woocommerce #gravityforms

gform_html_message_template_pre_send_email.php

add_filter( 'gform_html_message_template_pre_send_email', 'maybe_enable_wc_template_for_gf_notifications');
                              
function maybe_enable_wc_template_for_gf_notifications($template){
    if(class_exists('woocommerce')) {
        ob_start();
        wc_get_template( 'emails/email-header.php', array( 'email_heading' => '{subject}' ) );
        echo '<style>';
        wc_get_template( 'emails/email-styles.php');
        echo '</style>';
                                              
        echo '{message}';
        wc_get_template( 'emails/email-footer.php' );
        $template = ob_get_contents();
        ob_end_clean();
                                              
        return $template;
    }
    return $template;
}