MH & xmh: Email for Users & Programmers

MH and xmh are systems for managing electronic mail (email). They were designed primarily for users and programmers who need to handle email efficiently. ### MH (Mail Handler) - **What it is**: MH is a powerful email processing system that allows users to manage their email messages in a more programmable and scriptable way. It organizes email messages into a directory structure where each message is stored as a separate file.