Programmatically trigger WooCommerce email

woo-email.php

<?php       
    $mailer = WC()->mailer();
    $mails = $mailer->get_emails();

    if ( ! empty( $mails ) ) {
      foreach ( $mails as $mail ) {
        if ( $mail->id == 'wc_reminder_email' ) {
             $mail->trigger();
        }
      }
    }