Which of the following actions would be inappropriate in a professional email setting?

Using excessive emojis in a professional email setting is considered inappropriate because it can undermine the professionalism of the communication. Professional emails are expected to maintain a level of formality, clarity, and respect, which emojis can detract from. While occasional emojis might add a light-hearted tone or express emotion in more casual communications, overusing them can create ambiguity or give the impression that the sender is not taking the correspondence seriously. It is important to ensure that written communication remains respectful and is easily understood, particularly in professional contexts where tone is often conveyed through word choice and structure rather than emotional symbols.

The other actions mentioned—such as including a clear subject line, addressing the recipient appropriately, and signing off politely—are all best practices in professional email etiquette. These actions help to ensure that the email is effective, respectful, and maintains a standard of professionalism expected in the workplace.