Customizing WooCommerce Order Emails

Conditional Customization with Actions/Filters 

add_action( 'woocommerce_email_before_order_table', 'add_order_email_instructions', 10, 2 );

 

function add_order_email_instructions( $order, $sent_to_admin ) {

  

  if ( ! $sent_to_admin ) {

 

    if ( 'cod' == $order->payment_method ) {

      // cash on delivery method

      echo 'Instructions: Full payment is due immediately upon delivery: cash only, no exceptions.
';

    } else {

      // other methods (ie credit card)

      echo 'Instructions: Please look for "Madrigal Electromotive GmbH" on your next credit card statement.
';

    }

  }

}




Link

http://www.remicorson.com/woocommerce-display-coupons-used-in-an-order-in-the-confirmation-email/

https://www.sellwithwp.com/customizing-woocommerce-order-emails/