When communicating with people outside of the department, written communications should not:

In professional communication, especially when corresponding with individuals outside of your department, it is essential to use the appropriate format and ensure that your message conveys professionalism and clarity. The preference for written communication typically leans towards formal letter formats rather than memos when engaging with external parties. Memos are generally used for internal communications within an organization, where they serve a more casual or straightforward informational purpose.

In contrast, formal letters are more suitable for external correspondence as they project a professional image and better adhere to standard business practices. Using department letterhead is appropriate in formal communication as it officially identifies the organization sending the message. Additionally, signing the communication is essential as it lends credibility and a personal touch to the correspondence, indicating accountability and fostering a connection with the recipient.

Thus, while memorandums are effective for internal communication, they do not align well with the expectations for external correspondence, which necessitates a more formal approach to ensure clarity and professionalism.