The Surefire app has most industry certificates built into it, from domestic service certificates, to commercial certificates, electrical and plumbing.
Importantly, each of these certificates has a built in reminder facility, whereby when produced, they will automatically set up a service reminder for the following year, automatically texting, emailing and if required, posting out the reminders to the customer. With a built in facility to auto chase the customer until they schedule the service, they can even book the service via the Surefire “book an appointment” feature via your website.