|
» Description
- Open, convert and save the files on winmail.dat email attachments sent by Microsoft Outlook and Exchange.
- Easy-to-use graphic interface (no command-line tool).
- The only that displays the original message subject and body.
- And FREE!
Easily open winmail dat files on any device!
Send us your feedback:  .
» Online version
To open winmail.dat files on Mac, Linux, iPad, iPhone, Android and other mobile devices use the free online version.
» Download
Open winmail.dat online in seconds — Trusted TNEF decoder
Received a mysterious winmail.dat instead of your document or image? Microsoft Outlook sometimes wraps attachments in a TNEF package that other email clients can’t read. Our free online tool decodes winmail.dat files and reveals the original attachments — quickly, securely, and directly in your browser.
Fast & Free
Open winmail.dat files instantly — no cost, no account, no waiting.
Secure Processing
Files are decoded on-the-fly and not stored permanently on our servers.
All Devices Supported
Works in any modern browser: Windows, macOS, Linux, iPhone, iPad and Android.
Universal Extraction
Extract PDFs, DOCX, images, ZIPs and other attachments from TNEF wrappers.
How to open a winmail.dat file — 3 simple steps
- Select your winmail.dat file: Click “Choose File” and pick the
winmail.dat attachment you received by email.
- We decode it for you: Our TNEF decoder parses the file and lists the original attachments inside.
- Download the original files: Click each extracted file to download it in its original format (.pdf, .docx, .jpg, etc.).
That’s it — no Outlook, no plugins, no technical knowledge required.
Why winmail.dat files appear — and how we fix them
Microsoft Outlook sometimes encodes rich text emails and their attachments using TNEF (Transport Neutral Encapsulation Format). When Outlook sends this format to non-Outlook email clients (like Gmail, Apple Mail, or webmail), attachments can arrive wrapped inside a winmail.dat file that these clients can’t open. Winmail-Dat.com decodes TNEF and restores your original files so you can access your content immediately.
- Common scenarios: Shared PDFs that become
winmail.dat, images that won’t preview, or calendars and attachments missing from the message.
- Result: Our TNEF decoder extracts the hidden attachments and presents them exactly as the sender intended.
E07-m1101d Pinout -
The E07-M1101D is a compact 433MHz wireless module based on the Texas Instruments CC1101 transceiver chip, typically featuring an 8-pin DIP (Dual In-line Package) layout. Pinout Configuration
Q3: Why are there two GND pins?
To reduce ground inductance and improve RF performance. Always connect both if possible.
For more information on the E07-M1101D pinout and its applications, we recommend checking out the following resources: e07-m1101d pinout
Understanding the e07-m1101d Pinout: A Comprehensive Guide
8. Frequently Asked Questions (FAQ)
Q1: What is the difference between e07-m1101d and CC1101?
The e07-m1101d is a breakout module containing the CC1101 chip, crystal, matching network, and antenna connector. The pinout refers to the module’s pads, not the IC’s bare pins. The E07-M1101D is a compact 433MHz wireless module
Recommendations for Developers
The E07-M1101D is a compact, high-performance wireless transceiver module based on the Texas Instruments CC1101 chip. It is designed for low-power wireless applications in the 433MHz ISM band, making it a popular choice for industrial monitoring, smart home systems, and remote sensing. Pinout Configuration RXD / TXD (Pins 3 & 4): Default
| M1 | M0 | Mode | Description |
|----|----|-----------------|----------------------------------|
| 0 | 0 | Mode 0 (Normal) | Wireless UART (transparent) |
| 0 | 1 | Mode 1 (Wake-up) | Address wake-up transmission |
| 1 | 0 | Mode 2 (Power-saving) | Low power listening |
| 1 | 1 | Mode 3 (Config) | Enter AT command setup |
UART Pins
- RXD / TXD (Pins 3 & 4): Default baud rate is often 9600 (8N1). Cross-connect with your MCU (MCU TX → Module RXD).
- AUX (Pin 5): Essential for flow control. When LOW, the module is busy (booting, transmitting, or receiving data). Wait for HIGH before sending new data.
Open your winmail.dat file now — free TNEF decoder
Stop wasting time on unreadable attachments. Upload your winmail.dat now and get the original files back in seconds. Perfect for business users, administrators, and anyone who receives attachments from Outlook users.
Choose File & Open
Read FAQ
|