To request a new receipt for any Leanpub purchase you've made, please sign to in to Leanpub and go to your 'Purchases' page here:

https://leanpub.com/user_dashboard/purchases.

Next to the purchase, click "Request a Custom Receipt".

Then, click "Send Your Receipt".

If you need to sign in to Leanpub, you can do that here:

https://leanpub.com/login

If you need to set a new password to sign in to Leanpub, you can do that here:

https://leanpub.com/password_reset

If you are not receiving emails from Leanpub, you may want to add no-reply@leanpub.com to your Contacts list.

Here are instructions for adding custom information, like a company name and address, to your purchase receipt/invoice:

http://help.leanpub.com/en/articles/110742-how-can-i-get-an-invoice-or-receipt-for-my-purchase-can-i-add-custom-information-to-the-receipt-like-my-company-s-name-and-address