Ask HN: paperless receipts 15 years ago
yReceipts offers this service for any retailers already. We are live in the UK and Australia, soon to be live in the US and other European countries. You can send receipts via email from any POS, the customer receives an email with an attached PDF. We have a website where you can login and see your receipts etc.
New features currently being developed include exporting directly to accounting programs. www.yreceipts.com