In writing for a formal setting such as the workplace, it is important to understand the fundamentals of the situation. Often this requires consideration of the purpose, setting, and personal stance as well as understanding which medium is best suited for the situation. In written genres, the reader is most often searching for the facts and details that pertain to the topic, which means flowery sentences and details will be passed over and may be detrimental to the professional format. There should be limited use of the first person, proper grammar, capitalizations and punctuations used correctly, and respectful titles used to describe all clients, managers, or fellow professionals.
There are strict rules behind formal writing which sharply contrast the loose structure of informal writing. Most addresses should include a respectful title, a subject, a direct message, and a sign off with a signature. It is incredibly important to analyze the situation prior to writing. What direction should it go? If you have connections that might be beneficial to elaborate in a professional letter, this may give leverage over the situation. Rules of rhetoric are incredibly important in any professional scenario as it directly supports your case. However, using an exceedingly high or blatant amount of either pathos, logos, or ethos will result in negating its powerful effects.
In professional settings, appearance is crucial to success. Whether that be appearance of the formatted letter, the fit of the suit, or the way you carry yourself, they all create an image that imparts a first impression on the intended audience. Thus, in these settings it is of utmost importance to consider these aspects by proofreading, rehearsing, or studying the information.