Email is a form of communication, and all communication is governed by certain rules. These rules are important in business because they establish a certain formality, like all business correspondence.
A “personal name” is an arbitrary string that many mailers will allow you to define and is attached to your email address as a textual comment.
Always provide a personal name if your mail system allows it. A personal name attached to your address identifies you better than your address can on its own.
Use a sensible personal name: “Guess who” or other such phrases are annoying as personal names and hinder the recipient's quick identification of you and your message.
If your mail system lets you use personal ...