TNEF extractor

Recover the real files inside winmail.dat.

The attachment you need may be wrapped inside Microsoft's TNEF container. This workflow exposes it without uploading confidential data.

Workspace status

Ready · Local browser memory

Drop a file to recover attachments

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

    Select winmail.dat

  2. Step 2

    Review recovered items

  3. Step 3

    Download one file or the complete ZIP

What this workspace preserves

Original filenames retained where encoded

Partial failures are reported

Everything happens in this browser

Questions about this workflow

Do I need the original email too?

No. A valid winmail.dat file can be decoded on its own.

Can this recover every TNEF variation?

It supports common TNEF attachments and reports when malformed or uncommon structures cannot be fully decoded.