Microsoft Exchange Server is a mail server and calendaring server developed by Microsoft.
Requests for changes land on your campaign cards, so creators can see reviewer feedback beside the draft.
Your marketing reviewer gets a campaign approval task with the proposed launch date and creative file together, ready for a decision.
Your reviewers find campaign drafts right on their review tasks. A comment shows which version came from email.
Your creator gets the reviewer's requested changes and current draft together, so they can start the next revision without chasing files.