Send receipt document

Hi @oliebat,

Please note that the free version includes 2 documents —invoice & packing slip— but the receipt is included in the Professional extension only.

That said, if you want to learn how to attach the PDF invoice automatically, please read my reply here: https://wordpress.org/support/topic/problem-with-invoice-date-and-number/#post-18245345

Thanks for the clarification, @oliebat:

Please note that the attachment feature is available for the PDF invoice in the free version. However, to enable this feature for the packing slip and get additional functionalities, you will need the Professional extension.