There are multiple reminder services. At larger companies a lot of the issue isn't literally generating reminders, it is making sure they're sent to the correc

There are multiple reminder services. At larger companies a lot of the issue isn't literally generating reminders, it is making sure they're sent to the correct people/departments and are actioned by anyone. For example you sometimes have reminders sent to ex-employees, or sent to a mailing list and everyone assuming everyone else is going to action it. Or the reminder gets ping-ponged between multiple managers via email with nobody either able or willing to deal with it. None of these are tech' issues, and they don't have technology solutions as a consequence. So whenever I see an embarrassing expired cert, I don't assume technical malfunction, I assume political malfunction.