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.
Flag revised brand artwork before you confirm an older approval.
Keep reviewers aware of changes to a proof before they act on a decision. Your task shows the mismatch and asks for confirmation.
Log brand review decisions against the artwork upload reviewed.
Keep a clear history of who approved or rejected each campaign proof, even when the review board status changes later.