Which of the following should be avoided in email communication?

Using all caps in email communication should be avoided primarily because it is widely interpreted as shouting or expressing intense emotion. When a message is typed in all capital letters, it can come across as aggressive or overly forceful, which may not be the intended tone. This can lead to misunderstandings and negative perceptions from the recipient.

In effective communication, particularly in a professional or formal context, maintaining a respectful and clear tone is crucial. Therefore, using standard capitalization enhances readability and conveys a more polite demeanor, making it easier for recipients to engage with your message constructively. Additionally, employing a mixed case supports clarity and professionalism, which are essential in maintaining effective communication etiquette.