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.
Open a new review when approved copy changes before publication.
Your content lead gets a new review of revised copy, with the changes and publishing checks in one place before publication.
File each formatted draft in the review folder and reply to its writer.
Your writer's Markdown draft becomes a formatted Google Doc in your review folder, with comment access and a link in the original email thread.