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.
Share the exact report revision and record who received it.
Your reviewers get a link to the right report revision, and you see who can open it and where delivery needs attention.
File new project documents and flag uncertain matches.
Your synced work folder stays tidy as new files reach matching subfolders. A dated report shows which files need your decision.