Dropbox lets you store your files online, sync them to all your devices, and share them easily. Get started for free, then upgrade for more space and security features.
Your review card shows when feedback names an older PDF. You can resolve the mismatch while the card stays in review.
Your reviewer gets the current image or PDF and a clear question. Your review card shows which revision you sent.
Your maker gets a rework email that names the reviewed proof and fixes due next.
Your review tasks show the current image revision and reviewer due date, so the next handoff is clear.
Your maker gets the fixes in the review task, tied to the PDF version your reviewer marked up.