What you get

A review queue instead of data entry: Every invoice arrives already read, with its amounts and proposed coding filled in. The work left is to check and approve.
A person on every entry: A person approves every entry before it posts. The software prepares; it does not decide.
Clean records: Each posted bill carries its source document, so the paper trail is in the ledger, not in a mailbox.
Vendor control: Unknown vendors are held until a person decides what they are. Nothing creates a vendor on its own.
Coming: a monthly reconciliation summary: In the works, not yet part of the service.