# Winmaildat Opener

> Utilities

Canonical page: [https://chrome-stats.com/d/id596413390](https://chrome-stats.com/d/id596413390)

## Overview

- **ID:** `id596413390`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Maklabu GmbH
- **Category:** Utilities
- **Rating:** 3.50 / 5 (77 ratings)
- **Version:** 1.6
- **Last updated:** 2023-11-16
- **First published:** 2013-03-12
- **Size:** 8.75 MB
- **Data as of:** 2026-09-06
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/winmaildat-opener/id596413390)
- **Website:** [http://www.maklabu.com/iphone/winmaildatopener.html#marketing](http://www.maklabu.com/iphone/winmaildatopener.html#marketing)
- **Privacy policy:** [https://www.maklabu.com/iphone/winmaildatopener.html#privacy](https://www.maklabu.com/iphone/winmaildatopener.html#privacy)

## Description

Winmail.dat Opener is a free Chrome extension that registers as a handler for .dat files and lets you open winmail.dat attachments right from your email apps. When you tap a winmail.dat attachment, the extension launches and reveals the files inside. You can preview each item, save it to your device, resend, or print a selected file. Extraction happens on your device and does not require an internet connection.

This extension is ad-supported and asks for Internet access for ads, even though the actual extraction workflow is offline. There is an optional in-app purchase to remove ads. Not every file ending in .dat is a winmail.dat, so please confirm the file type if you encounter issues. The app is free to use with no required purchases for core functionality.

## Rankings

- #165,198 — Overall

## Review summary

User reviews indicate Winmaildat Opener generally fulfills its core promise by extracting and displaying winmail.dat attachments on iOS, supporting common formats (PDF, DOCX, XLSX, images) with a simple interface. It is praised as free or low-cost and helpful for accessing mobile-friendly attachments. However, many report stability issues (crashes when saving), troubles after iOS updates, the inability to delete files, and limited or slow developer support, with some annoyance from ads.

### Pros

- Opens winmail.dat and lists/opens attachments across formats (PDF, DOCX, XLSX, images).
- Simple and easy-to-use interface; does what it promises.
- Free or low-cost with ads; option to remove ads for a small fee.
- Helpful for reading attachments that can't be accessed on mobile before this app.
- Works across various emails, letting you view content without using a computer.

### Cons

- Crashes, especially when saving/exporting photos.
- Unreliable after iOS updates; may fail to open or prompt to download.
- No option to delete/remove files inside the app.
- Attachments can be grouped or numbered, making it hard to locate specific files.
- Support is slow or unresponsive; some users complain about ads and lack of assistance.

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Source: [Chrome-Stats](https://chrome-stats.com/d/id596413390)