Which detail is essential to include in a cover memo when forwarding correspondence?

Including a summary of action taken on the original correspondence in a cover memo is critical because it provides the recipient with essential context regarding the purpose and importance of the forwarded material. This summary allows the recipient to understand what has been done in response to the original document, whether it has already been acted upon, and what further actions may be expected. It helps streamline communication and ensures that the recipients are aligned on the outcomes or decisions related to the correspondence, thereby facilitating more effective follow-up and response.

The other details, while potentially relevant in certain contexts, do not serve the foundational purpose of a cover memo in the same way. Personal opinions of the sender could introduce bias or subjectivity, which may not be appropriate in formal correspondence. The history of related correspondence, though useful, can often be verbose and complicate the understanding of the immediate action. A list of recipients' preferences might be useful for other communication types but does not directly enhance the comprehension of the forwarded correspondence's action or status. Thus, the summary of action taken remains the most essential element.