Simplify the following text for a Grade 8 native English-speaking person.
Original: Webmail ( or Web-based e-mail ) is an e-mail service which is usually accessed through a web browser , instead of an email client such as Microsoft Outlook .
Simplified: The term Webmail ( or Web-based e-mail ) is used to describe two things . One use of the word is to describe a Webmail client : an email client implemented as a web application accessed via a web browser .