Add at least a first or last name to generate a code
Long single-line fields (e.g. a long address) aren't RFC 2426 line-folded here — virtually every phone's native scanner handles that fine, but a strict parser might not.
This only pre-fills text in the compose window for the sender to edit — it can't read anything off their phone automatically.
Enter a valid email address to generate a code
mailto: link opens whichever mail app the scanner’s phone has set as its default — often a personal account rather than their work one — and does nothing on a phone that only uses webmail in a browser. If your scanners mostly use Outlook, switch “Opens in” to the Outlook app.
qr-codes.stratumcm.io that passes the email to Outlook, so scanning needs a signal and printed codes rely on this site staying at that address. If the phone doesn’t have Outlook, the page offers its usual mail app instead. Scan a test print with both an iPhone and an Android phone before printing a batch.