Short Informative Messages
Short, informative messages can take a variety of forms. For example, a quick communication to a teammate can utilize IM technology and provide a vehicle for a quick response. These messages tend to be more conversational in structure and resemble a chat more than an email or other document.
Another form of a short informative message could be a social media message. Social media messages are better for communicating with larger, usually external audiences. For example, one of the primary uses of X by companies is advertising and promoting their brands.
If the situation requires a more formal approach to your message, sending an email is usually more appropriate. In this example, the communication is being sent to a company executive from a subordinate.
X is the social media platform formerly known as Twitter.