Systems and methods for processing, management and display of email content for proofing and review are provided. A first message is received, and the first message is inspected for a first variant identifier. Then, the first message is assigned with a first versioning code and displayed in a user interface. When a second message with a first variant identifier is received, the second message is assigned with a second versioning code that denotes the second message as a newer version of the first message. Then, using the second versioning code, the second message is automatically displayed in place of the first message within the user interface. In some embodiments, the first variant identifier is automatically included in the first message sent by a sender, in response to the sender utilizing a selected attribute to create the first variant identifier.