Make it easy to email you
An email QR encodes a mailto link, so scanning it opens a fresh message addressed to you — with the subject and body already written if you set them. It turns "email us" on a poster or a stand into a single tap.
Generated locally
The link and code are built on your device, so nothing is uploaded. Prefilling the subject is a small touch that pays off — it routes enquiries and gives people a reason to actually send the message.