Mailchimp Transactional is simple, powerful transactional email.
Send your current design proof to its reviewer and log the version.
Your reviewer gets the current image or PDF and a clear question. Your review card shows which revision you sent.
Email your current artwork proof to the reviewer with a deadline.
Your reviewer gets the current proof and a clear decision deadline by email when a card is ready for review.
Email the designer the reviewed proof and fixes for the next version.
Your maker gets a rework email that names the reviewed proof and fixes due next.