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EMLX

EMLX file format
explained

Apple Mail Message — macOS native email format

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What is a EMLX file?

EMLX is Apple's proprietary email format used by Apple Mail (Mail.app) on macOS and iOS. Each .emlx file contains a single email message with a byte count header followed by RFC 822 content, plus optional Apple-specific metadata in a companion .plist file. EMLX files are stored in macOS Library folders.

Origin

Apple Mail (Mail.app)

Used by

Apple Mail on macOS and iOS

Key features

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