Attachments to confirmations, automatic emails after payment, emails after registration

Hi,
I have three topics:
attachments to emails sent to the customer after registration or purchase as a guest - in accordance with applicable regulations (Poland) - the seller is obliged to provide the ordering party with the regulations and privacy policy on a permanent medium. It cannot be a link to the privacy policy (page or pdf file) on the seller's website. Is it possible to implement such a functionality?

Email confirming registration - in accordance with the regulations, after registering an account, the user should receive an email verifying the correctness of the data and containing the regulations and privacy policy - is it possible to implement the functionality so that after registering in the Gridbox store - such an email (with attachments) is sent?

After making a payment, e.g. via a payment gateway, the customer should receive an email confirming that the order is complete (paid) - this can be done, but manually. The question is whether it is possible to implement the functionality so that the customer automatically receives a message after paying for the order.

All of the above functionalities are needed for the seller to act in accordance with applicable law.

What are the possibilities for implementing this?

Tom

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