Mail User Agent (MUA)

A Mail User Agent (MUA) is a type of software that allows users to send, receive, and manage their email. Common examples include applications like Microsoft Outlook, Apple Mail, and web-based services like Gmail. The MUA acts as the interface between the user and the email system, helping to compose messages, organize inboxes, and access email from different accounts. In essence, it facilitates all interactions with email, making it easier for people to communicate electronically.