Google Contacts, the address book built into Gmail, lets you keep track of all your contacts, see when you last interacted with them, and more.
Merge each request's PDF links into a single filed document.
Your reports or invoices become a single PDF in your shared folder, with a link on the request you submitted.
Classify each incoming document and flag facts needing review.
Get a JSON file with key facts from new intake documents, plus a short summary and clear notes on anything you need to review.