Hi Mike, thanks for your answer. By Custom Field I mean I’ve used ACF to add a special field to “order” posts only. It works, but only after I have saved the order, then mark is as completed and re-save, only then I get this field’s info in my “order completed” e-mails. What I want is to process and store this field before the email gets sent, so I have to save the order just once. Do you think it is possible?
Thank you again.