My spouse sells gift certificates for her business. It's a small volume. Whenever someone pays for a certificate on stripe, she receives the mail and she send

My spouse sells gift certificates for her business. It's a small volume. Whenever someone pays for a certificate on stripe, she receives the mail and she sends the certificate to the customer's email that initiated the transaction on Stripe. The certificate is a simple word file with a certificate number she increases manually before printing it to pdf. You could write an api that's called by stripe whenever a transaction occurs, validates the transaction with stripe, prepares the pdf and sends it to the customer.