File signed agreements, keep order receipts, bundle handoffs. Every one is ready to run, and you can adjust it in plain language.
Email the current proof to its reviewer and note the revision sent.
Your reviewer gets the current image or PDF and a clear question. Your review card shows which revision you sent.
Email designated reviewers each new project file's name and link.
Your reviewers get an email when a file lands in your shared review folder, with its name and a link they can open.