I wish to include a personalised QR-code in the Mass Mail for people in the Grace list, to facilitate their payment, which in Sweden can be done by the Swish function: use your phone, read/scan the QR code, key in your PIN, and the payment is done.
The problem I meet is to understand how I can invoke the result (a unique personalised QR png-file) of an API-request (to the Swish company) in the flow of text in the mass-mail message.
Has anybody done this before? Can php be invoked or Python?
Claes