Hey I'm one of the Abacus co-founders — we hear you on not wanting to get blasted with a bunch of notifications. As a manger, it's up to you to decide how you want to review expenses. You can review them as they come in, but you can also flip off those notifications and review them daily or weekly. We also provide lots of context so you can group by user, category, trip, etc. At Abacus we like to do stuff real-time, but our goal isn't to prescribe one way of doing things — we want to give you the flexibility to do things in whatever way works best for you.