Letter Opener Pro
Letter Opener Pro
12.0.4

4.3

Letter Opener Pro free download for Mac

Letter Opener Pro

12.0.4
10 October 2019

Extracts attachments from winmail.dat files in Apple Mail.

Overview

Letter Opener extracts attachments from winmail.dat files (was OMiC). When using Apple Mail, if you've ever received an e-mail that included an attachment called winmail.dat, you know the frustration of not knowing what was sent to you. When this comes from an employer or client, it's even more frustrating. That winmail.dat file may only be the rich text format or it could contain an important graphic, calendar entry or invitation, task, address book contact, Microsoft Outlook Note, or nested messages. In those cases, you may miss important communications.

With Letter Opener in Apple Mail, the worry is gone. Letter Opener converts winmail.dat files on the fly, so you can actually see and use what the sender intended you to have. There's no fuss with Letter Opener, no need to drag the winmail.dat file onto another application or call upon several programs to help you. Once Letter Opener is installed, email attachments just work!

The published price is that of an annual subscription. View full pricing info.

What's new in Letter Opener Pro

Version 12.0.4:
  • Support QuickLook on macOS Catalina.
  • Fix text selection in Catalina Mail.

47 Letter Opener Pro Reviews

See all

Rate this app:

Daripenn
30 August 2011

Most helpful

Very disappointed by the developer. I gladly pay for an update if it provides new and useful features. However, I am not willing to pay just to restore compatibility with a new version of Apple Mail. I had to update several apps after upgrading to Lion, but LetterOpener is the only one that wants to cash in on that opportunity. Unfortunately, I going to remove this otherwise very handy tool...
Like (6)
Version 4.0
Kobalt
20 September 2016
US$20 just for an upgrade from v8 to v9 just so it works under Sierra? Bit much, my dear, unless there are some major new features that are neither mentioned here nor on the Creative in Austria website.
Like (4)
Version 9.0.0
2 answer(s)
RavenNevermore
RavenNevermore
01 November 2016
Yeah, this is a bit pricy. I hadn't had a need for anything like this in years, but the last time I did, TNEFs Enough worked great.
Like (4)
Cealus
Cealus
04 October 2017
It gets worse. I upgraded to High Sierra and Mail started saying it was incompatible. Went to their site to download the latest. Installed and entered my license. No go. Looks like it is now $20 PER YEAR. Sorry not worth the occasional need.
Like (1)
Kobalt
16 September 2016
Doesn't work with Mail 10 (Sierra GM) at the moment.
Like
Version 8.0.8
Ergolad
18 December 2014
I previously posted this review on CNET: I've been a long time user of Letter Opener, going back to the OMiC days. Until recently, I'd not upgraded to the new version when I updated my OS to Mavericks. I thought I'd wait and see if I missed it. Lo and behold I was sorting email and came across a winmail.dat file attachment! Installing the trial, it was immediately resolved! I came to the product as a switcher from the Windows environment in 2008. I appreciate the long term development of this product, which results in fast updates when they're required by new version of Mail.app. (Wish Apple would just build it into Mail.app! But it keeps the developers of Letter Opener, Creative in Austria, in business!) At one time there was a lifetime upgrade option for this product, but I don't see it as an option, though, if you have a previous license you qualify for a reduced upgrade price (1/2 off). I hope they bring that option back. Otherwise, this product can seem costly, which I know frustrates a lot of people. All I can say, is I recommend the complainers develop a freeware tool if that's how they feel. Speaking of which, there ARE alternatives, but nothing that I've come across that integrates so seamlessly. The reality is if you don't want to pay, you don't have to. You can utilize one of the manual alternatives. Just search "winmail.dat viewer mac" and you'll come up with a handful of tools. But if you want a product that is consistently updated, integrated into Mail.app, and just works, then you'll be well served by Letter Opener. Also, kudos to Creative in Austria for taking up development of DockStar, a great tool that adds up to 5 new customizable mail indicators to the dock icon. I'd been a previous user and was sorry to see Ecamm drop the product. Happy to see it back and look forward to it moving out of BETA.
Like (2)
Version 7.0.2
LeMerlot
09 October 2014
Today I had the win.dat issue with Mail 7.3 and a critical incoming email. Just installed Letter Opener Pro, problem was solved – bought Letter Opener Pro immediately. Great!
Like
Version 6.0.7
TomS7634
25 June 2014
Hi! Love the plugin. Support does not seem to respond to emails tho. I wrote an email about when we can expect a version working with the new OS X 10.9.4 public beta update. It broke the plugin. Otherwise, Thumbs up.
Like
Version 6.0.6
Kobalt
15 May 2014
New version for OSX 10.9.3 https://s3.amazonaws.com/LetterOpener/dmg/Letter-Opener-6.0.6.zip
Like
Version 6.0.5
Dan-Neal
28 February 2014
Letter Opener Pro 6.0.5 is now available and offers compatibility with Mail 7.2/Messages 7.2. It can be downloaded from the author's website at http://www.creativeinaustria.com/
Like
Version 6.0.4
williont5887
26 February 2014
I don' know why it just open some of my winmail files. There are totally 13 winmail.dat attachmens on my Mac Mavericks and 4 of them are fail to read. So I search and download another one - Winamil Viewer from Mac App Store. It helped me open all my cryptic winmail files. Your letter opener let me down.
Like
Version 6.0.4
XavierS8875
19 November 2013
Good product, absolutely NO support. Tried to e-mail them about 12 times about a billing issue, and got STRICTLY NO answer. Not even a comment saying they couldn't help. I think a good software developer/publisher should not only write good apps, but should answer his mail too, and try to help (paying!) customers. No kudos.
Like (2)
Version 6.0.3
TomEck
01 November 2013
The function Letter Opener offers is a nice one, but the price tag is questionable from my view. I owned LO as it was beta and called OMiC to some version of LO later (10 licenses or so...). However, to pay upgrade fees for every adaptation was expensive. I understand the viewpoint of the developer (see his comments to other users below) and I appreciate that he offers lifetime licenses now (it wasn't available when I dropped LO in the past as far as I remember). Anyway, whether or not LO is worth its price is something every user has to decide him/herself. Just be aware there are alternatives (as mentioned in the "Similar Software" area above and some comments below) and even some email clients with a built in functionality similar to LO. I for example have switched to MailMate two and a half years ago. MailMate did have a price of $ 25 until lately but now $ 50 for different reasons (you may read about it on its developer page) and offers so much more functionality as LO and Mail.app together.
Like
Version 6.0.2
2 answer(s)
Catlan
Catlan
29 November 2013
There is also Letter Opener Lite with a more favourable price then Letter Opener Pro.
Like
TomEck
TomEck
29 November 2013
True, Christopher. However, the lite version is an app without Mail integration (like "Klammer" [which opens MSG and OFT, too] or similar apps) and not an plugin like the the pro version. That makes a difference because (1) that is less convenient and (2) then it needs to be considered that just for opening winmail.dat files there is TNEFs Enough as free alternative as well. Don't get me wrong, I don't deny that LO and even LO lite have their benefits. I also understand that you need to adjust the plugin when Mail or OS X makes changes but other developer do the same without charging an upgrade fee that often or asking to buy a life time license for 75% markup. It is all about if the user believes it is worth the price.
Like
$29.99

4.3

App requirements: 
  • Intel 64
  • macOS 10.12.0 or later
Category: 
Developer Website: 
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