What in your business do you still check by hand every day?

I have automated a lot over the years, invoicing, scheduling, reporting, most of it now runs itself. But there is always one thing left that I still check manually, every single day, because the one time I trusted a tool to catch it, it did not. For me it is new leads going quiet after the first reply. I open that list myself every morning instead of trusting a dashboard to flag it. Curious what that one thing is for you, and whether you have ever found something that actually earned your trust enough to stop checking it by hand.