MSG explained

An MSG is an Outlook item in a compound file.

It can represent an email, calendar appointment, contact, task, or note and stores MAPI properties, bodies, recipients, and attachments.

Workspace status

Ready · Local browser memory

Open an email file

Open it once. Reader, safety, headers, route, redaction, and export reuse the same in-memory source.

.EML
.MSG
.EMLX
winmail.dat
Processed locally. Files and filenames stay on this device.
Workflow

From source file to finished result

Runs locally
  1. Step 1

    Drop the MSG

  2. Step 2

    Detect its Outlook item class

  3. Step 3

    Read or export the recovered content

What this workspace preserves

Not every MSG is an email

Outlook-specific metadata may not map to EML

The original file stays unchanged

Questions about this workflow

Why can Windows sometimes open MSG but Mac cannot?

MSG is closely tied to Outlook and MAPI, so native support varies by installed software and platform.

Is MSG the same as EML?

No. MSG is an Outlook structured-storage format, while EML is an internet message built from RFC headers and MIME parts.