# Winmail Viewer - Letter Opener — user reviews > 541 indexed App Store user reviews of Winmail Viewer by Letter Opener GmbH, rated 4.80/5 from 4,844 ratings. - Source: https://appshunter.io/ios/app/winmail-viewer-letter-opener/id411897373/reviews - App overview in markdown: https://appshunter.io/ios/app/winmail-viewer-letter-opener/id411897373.md - Rating breakdown: 5★ 4,213 · 4★ 362 · 3★ 102 · 2★ 38 · 1★ 129 ## Newest reviews (17 of 541) ### 4/5 — Seems to work! *2026-07-29, version 17.0.0* Just tried it and can read the darn invoice! ### 4/5 — Ok *2026-07-13, version 17.0.0* Annoying review pop up but app helps me view check easily ### 5/5 — Great! *2026-06-16, version 17.0.0* First time to use it, easy and great app ### 5/5 — Very helpful tool! *2026-06-16, version 17.0.0* My work schedules were very frustrating to try and open but now it’s very simple and I can easily read all the files. ⭐️ ### 5/5 — Great app *2026-06-05, version 17.0.0* I just use this app to open attachments sent to me on my iPad. It was easy to use, and open the document immediately with no hassle. I’m just sorry I didn’t download it sooner. ### 5/5 — Works great for what it is *2026-05-28, version 17.0.0* Nothing crazy. Does what it needs to. ### 5/5 — Superb app *2026-05-28, version 17.0.0* Winmail really nailed this app. It’s so simple to use and works effortlessly. ### 5/5 — Saved Me *2026-05-27, version 17.0.0* Would you believe that I spent a year trying to find something to open my paystub? It turns out that cost me a lot ### 5/5 — As advertised *2026-05-26, version 17.0.0* I have an iPad, but parent company always sends Alerts that are critical to read immediately in Windat. This app is a lifesaver. Thanks! ### 5/5 — Best bridge app *2026-05-25, version 17.0.0* This is literally the only way I can see my paystubs. Every other app won’t open it because of the format it’s delivered in. ### 5/5 — Just works *2026-05-24, version 17.0.0* Have tried a few apps and never quite right. For example had an email with a QR code and wasn’t displayed by the viewer app. This is the only app I have found that accurately represents the original email. ### 5/5 — WinMail Viewer *2026-05-14, version 17.0.0* Perfect for what I need! Thanks, ### 5/5 — Works good *2026-05-14, version 17.0.0* Very good ### 5/5 — Excellent App! *2026-05-08, version 17.0.0* It’s made my paperwork much easier. ### 5/5 — Opens calendar invitations from MS Outlook *2026-05-05, version 17.0.0* I tried several apps to correctly open winmail.dat files on my iPhone. Letter opener is the only one I have found that correctly inserts meeting invitations from MS Outlook. It is very easy to use also. ### 5/5 — Great App for Winmail.dat Conversion *2026-05-04, version 17.0.0* I recently started having emails received in Apple mail from windows users come in the winmail.dat format. This app quickly translates the attachment so I can read the Excel file. ### 5/5 — what .. it works *2026-04-29, version 17.0.0* It very nicely opened the video my buddy sends me .. before this great simple app there was just a blank page .. no problem .. Have a Good Life….. ## Most critical reviews (10 lowest-rated) ### 1/5 — Scam, do not install. *2026-06-26, version 17.0.0* Says there’s no in app purchases but then tries to make you subscribe when you try and open an attachment. ### 1/5 — Rubbish software *2026-05-22, version 17.0.0* I don't understand why anyone ever saves anything in a format which requires this software to open it when the alternative formats are free. Moreover, it opens blank documents so it is useless. ### 1/5 — Hopeless *2026-05-08, version 17.0.0* Not compatible with Apple Mac ### 1/5 — It’s not free, and the pay version sucks *2026-02-18, version 16.0.6* Needed it for my Mac, got the free version and can only open 1 document per week. Paid for the unlimited version, only to realize that is reformats the document and scrambles them. Any word or PDF docs are all scrambled and all over the place. Dont download it. Dont pay for it. ### 1/5 — Does not work *2026-01-02, version 16.0.9* Can’t get my password to work ### 1/5 — Awesome !! *2025-11-19, version 16.0.9* Awesome to view attachments that were sent from a windows outlook desktop !! ### 1/5 — IT DOESN’T OPEN ANY WINMAIL ATTACHMENTS *2025-10-08, version 16.0.6* If it opened attachments it would be wonderful but if it does I cant figure out how All it did was reconfigure the email and tell me it was done ### 1/5 — Doesn’t work as advertised *2025-08-27, version 16.0.9* Many times people can’t open this file even if the user has the latest and greatest Outlook and Windows installed on their computer. I often have to print out these files and rescan them in using some other PDF program. ### 1/5 — Works well *2025-05-21, version 16.0.9* Seems to work well when needed ### 1/5 — cant open *2025-05-15, version 16.0.6* I operate on a mac system. this mail will not open. I do not wish to buy a windows product. This apparently is trying to force me to do that. why would I buy anything from anyone that wants to extort a sale. I you really think your product is superior then why try to sell it this wayl thanks but no thankjs ## Most praised reviews (10 highest-rated) ### 5/5 — Great app! *2026-08-06, version 17.0.0* I needed something opened immediately. ChatGPT recommended this and it works great thank you so much. ### 5/5 — Winmail my starsssss *2026-08-05, version 17.0.0* Great viewer open up. I am deeply sincerely loved the Winmail Viewer. ### 5/5 — Works great! *2026-07-17, version 17.0.0* Works great for me. No issues. ### 5/5 — Good product *2026-07-14, version 17.0.0* Does the job - installed on desktop and mobile. ### 5/5 — Excellent! *2026-07-09, version 17.0.0* Great app! Works perfectly! ### 5/5 — Best bridge app *2026-07-09, version 17.0.0* This is literally the only way I can see my paystubs. Every other app won’t open it because of the format it’s delivered in. ### 5/5 — it worked! *2026-06-30, version 17.0.0* Not sure how often I’ll need this, but it worked once. ### 5/5 — Awesome *2026-06-29, version 17.0.0* Awesome app ### 5/5 — Very helpful *2026-06-26, version 17.0.0* I have a few vendors whose invoices always come in a .dat format and it has been rediculous trying to find something that opens them. This is perfect and works great ### 5/5 — Fast and simple solution *2026-06-19, version 17.0.0* Works as advertised, and solved a “cant read my stored Outlook emails in Dropbox” problem I had for years. Thank you. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-28.*