Open winmail.dat. Get Your Files Back.
You received a winmail.dat and none of the files you were expecting. Open it on iPhone, iPad, and Mac — read the full message, extract every hidden attachment, 100% offline and private.
Powered by the Rush Tools Engine™
Winmail.dat Viewer parses .dat files entirely on your device. No cloud uploads, no server processing, no telemetry — forensic-grade privacy by design.
Rescue Your Attachments
Extract every document, image, and file locked inside the winmail.dat — each one ready to open on its own.
Read the Full Message
See the email exactly as it was written, with full formatting intact. No garbled text, no missing content.
Instant. No Setup.
Open the file. That's it. No email app, no account, no configuration. The Rush Tools Engine™ handles the rest in milliseconds.
Private by Design
winmail.dat files contain private business correspondence. Everything is opened on your device only — nothing is ever uploaded.
See it on every device.
About DAT files.
What is a winmail.dat file?
winmail.dat is a file Microsoft Outlook automatically sends when an email is composed in Rich Text Format. It wraps the message body and all its attachments into a single container that most email apps cannot decode.
Where are my attachments?
Inside the winmail.dat. The sender's email app packed everything into it. Winmail.dat Viewer extracts each attachment so you can open each one normally.
Can I open it without Outlook?
Yes. Winmail.dat Viewer is a standalone app — no Outlook, no Windows, no desktop software required.
Is my email private?
Completely. Everything is opened and extracted on your device. Nothing is uploaded to any server.
Get Winmail.dat Viewer today.
Open .dat files in seconds — strictly offline, strictly private.