Letter Opener Pro
Letter Opener Pro
12.0.4

4.3

Letter Opener Pro free download for Mac

Letter Opener Pro12.0.4

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.

Related articles

Join over 500,000 subscribers.

Subscribe for our newsletter with best Mac offers from MacUpdate.

How would you rate Letter Opener Pro app?

47 Reviews of Letter Opener Pro

Daripenn
30 August 2011
Version: 4.0

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...
(6)
Kobalt
20 September 2016
Version: 9.0.0
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.
(4)
Show comments (2)
Kobalt
16 September 2016
Version: 8.0.8
Doesn't work with Mail 10 (Sierra GM) at the moment.
(0)
4.5
Ergolad
18 December 2014
Version: 7.0.2
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.
(2)
5
LeMerlot
09 October 2014
Version: 6.0.7
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!
(0)
4.5
TomS7634
25 June 2014
Version: 6.0.6
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.
(0)
5
Kobalt
15 May 2014
Version: 6.0.5
New version for OSX 10.9.3 https://s3.amazonaws.com/LetterOpener/dmg/Letter-Opener-6.0.6.zip
(0)
4.5
Dan-Neal
28 February 2014
Version: 6.0.4
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/
(0)
3
williont5887
26 February 2014
Version: 6.0.4
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.
(0)
3
XavierS8875
19 November 2013
Version: 6.0.3
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.
(2)
TomEck
01 November 2013
Version: 6.0.2
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.
(0)
Show comments (2)
3.5
JDMv2
28 October 2013
Version: 6.0.1
Just did an upgrade to 10.9.0 and promptly installed 6.0.1 of letter opener. Mail keeps on hanging requiring a force quit. Removed the extension and all good. Everytime you access an email that requires Letteropener you get a duplicate of the message showing. After each force quit another one appears. Trying to move or delete the message get a hang throwing the error message to console: 28/10/2013 11:50:28.972 am Mail[1548]: CFPropertyListCreateFromXMLData(): Old-style plist parser: missing semicolon in dictionary on line 3. Parsing will be abandoned. Break on _CFPropertyListMissingSemicolon to debug.
(0)
Show comment (1)
DieterN2898
27 October 2013
Version: 6.0.1
How can I get rid of this f...ing non-working plugin???
(0)
4.5
BetteP4838
25 October 2013
Version: 6.0.1
This is a great little addition to Mac Mail and especially appreciate the lifetime upgrade license. Pay once and get every upgrade, large or small without additional fees. A great idea I wish more developers would use. And, by the way, I don't think this developer should be disparaged for charging for his software especially when it is rock solid and he is constantly updating. That takes a lot of work! I think it is well worth the money to be able to open windat files without effort.
(1)
Show comments (2)
1
ArildN6895
25 October 2013
Version: 6.0.0
I purchased Letter Opener Pro on September 12. OSX Mavericks was announced in June, and expected to be available in October. In September, Mavericks was available to developers so that you could do the necessary changes. Do you really want me to pay a new upgrade now, just 5 weeks after i purchased the license? Any other serious software company would offer a free upgrade path to the version of the currently announced products
(2)
Show comments (4)
1
DuarteA9727
24 October 2013
Version: 6.0.0
I purchased a previous version for $35.94 and now it no longer works with Apple Mail 7.0. It worked well but I’m not wish to pay again for update.
(4)
Show comment (1)
4.5
MikeB9599
24 October 2013
Version: 6.0.0
Great program - purchased in early Sept. '13 - but just installed Mavericks and it says that LO is not compatible. I purchased the option for free upgrades but I am unsure how to access the free upgrade. It does not seem to be automatic. I just downloaded v6.0 but it looks like I only have a 15 day trial. Anyone have an idea of how I can use my free upgrade option?
(1)
Show comment (1)
4
Curdaneta
23 October 2013
Version: 6.0.0
I've been using this software for quite some time but I'm tired of having to pay large amounts of money for each upgrade. Specifically I think this isn't worth the $ 14.95 because the developer didn't even have to spend money to acquire the OS update.
(1)
Show comment (1)
0.5
tonymaynard
28 July 2013
Version: 5.1.0
I've spent an amazingly large amount of money on this product. It is by far the lowest value I have ever received from a software product. Shame on Apple for not including a decoder in their product. But this high priced, simple program never updates and there are free alternatives. Greedware. Beware.
(1)
Show comments (2)
2.5
RichardAnderson8178
26 April 2013
Version: 5.1.0
I purchased a previous version but it no longer works with the latest Apple Mail ap. It worked pretty well but do not wish to pay for what I consider should be a normal update. Moreover, there is no uninstaller for letter opener.
(0)
Show comment (1)
Pastor-G
28 January 2013
Version: 5.0.4
TNEFs Enough is free. It takes an extra step but $29.95 is outrageous for something you can do for free.
(3)
Show comments (3)
3
rwilkin
20 September 2012
Version: 5.0
one of the best, simplest plugins I've ever used... until the latest Apple software update. osx mail tells me this app is not compatible with mail 4.6 and message 4.6. Would have given all 5 stars but since it's broken, i'm giving it 3s.
(1)
Show comment (1)
5
dvh
07 August 2012
Version: 5.0
Essential if you receive a lot of emails from Windows users and have to deal with Outlook winmail.dat files. Developer is extremely responsive and fixed an install glitch I had on my system within 24 hours. Totally worth the money to have a totally transparent "it just works" solution.
(0)
Show comment (1)
5
Ergolad
04 April 2012
Version: 4.0.2
I stand by my previous review for v.3.0.8 and can't imagine using mail.app without this add-on. There is a cost to upgrade ($14.95) when a new OS comes out. With the frequency of new Mac OS rollouts this may seem prohibitive. In all fairness the developer has to rework the add-on for new versions and updates to mail.app, and I appreciate that he does so in a prompt fashion. In addition he offers a lifetime upgrade option, bringing the one time cost to $34.90, future-proofing Letter Opener. Considering that Lion itself is $29.99 I often hesitate to upgrade Letter Opener until I realize how much I miss it!
(0)
Show comments (3)
2
monty-3
23 December 2011
Version: 4.0.2
Upgraded to Lion and the new Mail, and needed to update Letter Opener. The only option is to buy the program--nothing about updates. So I emailed the developer - 7 times! No response in over a month to any email. No support. No information on the web site or the download on how to remove the plugin. It is not located in the Mail > Bundles folder and Spotlight can't find it. Where is it hidden and how do your remove it? Nothing again from the developer! I give up on the app.
(1)
Show comment (1)
2.5
JDMv2
05 September 2011
Version: 4.0
I had been trialing Letter Opener under Snow Leopard and found it to be a valuable plugin for Mail. I was ready to pay for a license when migrating to Lion but unfortunately version 4.0 is just to unstable. Mail would constantly crash when viewing messages encoded in TNEF. Looking forward to a dot release to improve reliability.
(0)
Daripenn
30 August 2011
Version: 4.0
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...
(6)
Show comment (1)
2
spamoff
15 August 2011
Version: 4.0
Works okay, but the upgrade price to make it compatible with Lion is more than double the purchase price of the 4 apps available at the Mac App store that do exactly the same job.... Not a great way to reward those of us who purchase shareware faithfully...
(2)
2.5
bsm007
26 July 2011
Version: 4.0
Does not work on Mac Lion and developer site has no mention of migration plan whereas other apps have anticipated the Lion OS release.
(1)
Show comment (1)
stedica
20 July 2011
Version: 3.0.8
When will mail 5.0 version of mail opener be released? All this upgrading to Lion OS X will require this update.
(1)
4.5
Ergolad
15 March 2011
Version: 3.0.8
I am happy with this product combined with Letter Opener, it's a great compliment to Mail.app, promptly upgraded when Apple makes changes to Mail.app. Nothing worse than being stuck with plugins that you rely on that don't get updated in a timely fashion. Support has always been spot on and quick to respond. As a switcher, and once heavy Outlook user, I find this product indispensable. Basically if you want a quality, transparent product that will help bridge the gap between the Windows Outlook world and Apple's Mail.app, this is the product for you!
(1)
Show comments (2)
Yoxi
18 October 2010
Version: 3.0.5
FYI Version 3.0.5 * Adds Compatibility for Mac OS X 10.6.5. * Improved winmail.dat recognition
(0)
Hans_K
17 April 2010
Version: 3.0.3
Anyone interested in swapping a license for Letter Opener with DVDRemaster Pro (legally purchased license)?
(1)
Mikebradleyvb
14 December 2009
Version: 3.0.3
I downloaded Letter Opener software on 12/11 for the 15 day free trial. Since then, I've been bombarded with extremely annoying pop-ups asking me to pay for a license. I did use it to open one win.dat file and it worked, although the copy was very bad - not sure if it's the software or the original document. In any case $29 is way too much for this capability, which MAC should include with its operating system.
(5)
Kobalt
09 November 2009
Version: 3.0.3
Should I or shouldn't I download and install this update? LO is working fine for me at the moment and I have no idea what this update will do to it. It brings to mind the saying 'better the devil you know', or 'why fix it if it ain't broke'. Please Christopher, can we have some details about your incremental updates?
(0)
Show comments (2)
Jazzyguy
07 September 2009
Version: 3.0.1
I hate to cost this guy some money but as someone said here THEF's Enough does exactly the same thing that this app does for FREE.I don't like to take money out of a developer's hands but the Mac Community deserves to know about this.Consequently if you type Enough in the MacUpdate search box you will get it and it is FREE which is better than 29 hard earned bucks!
(5)
Show comments (3)
Yoxi
31 August 2009
Version: 2.2.2
Support for Mail v4 in Snow Leopard? I hope it's coming soon.
(2)
Show comments (5)
4
Josue64
15 July 2009
Version: 2.2.1
I have used this app for some time now. Since the early version. I love it. It does what is says it does. I do agree that the developer should send you the registration number, but he does reply when he can. The new version works great. I bought the app at full price which I think is a bit too much, but at the MacUpdate price, it's doable. Apple really should hire the developer.
(2)
DCT
05 June 2009
Version: 2.1
BEWARE: After paying, you will not receive a license. I have sent three emails to the author with no response. Fortunately, I paid with AMEX through PayPal so I can dispute the payment.
(3)
Realguy
01 June 2009
Version: 2.1
This may be great software - but after having it loaded for 24 hours, and starting/stopping Mail.app perhaps 5 times, I do NOT want to be asked every single time I open the app if I am ready to pay yet! I requested the DEMO period ONCE. I expect to get through the demo until I am asked AGAIN. I have removed the software - so it never had a chance to show me what it could do. If the developer rethinks that strategy (and also includes an UNinstall), I would try it again some day.
(2)
Show comment (1)
gryphonent
08 October 2007
Version: 1.7.6
How does this compare to YAI, which sells for $4 and - from what I can see - does exactly the same as OMiC.
(0)
Show comments (2)
4
Apikoros
30 July 2007
Version: 1.7.4
I must revise my previous review. It seems to have been one particular file that OMiC choked on and that crashed it. Since then, it has worked well on two other files received. (Side note: the author asked me to send him the file that cashed OMiC and I did. I later e-mailed to ask him if he had figured out the problem, but he was not courteous enough to reply.)
(3)
Thesun
23 June 2007
Version: 1.7.4
I don't understand how this feature is not provided by Apple, with so many Windows users out there running Outlook, you keep getting Winmail.dat files which are unusable on any mailer except for Outlook! Christopher Atlan to the rescue with a wonderfully smooth application that was easy to install and even easier to purchase and activate. I wish all software was like this. It delivers on its promise, and actually does a bit more than that, for example I never expected the support for calendar requests but it just works wonderfully! Thank you Christopher! :-)
(2)
5
Mberg
29 May 2007
Version: 1.7.3
Amazingly good little program for those DAMN winmail.dat files all our PeeCee colleagues at work keep unknowingly sending us. I tried to get IT to 'uncheck' the box on outlook mail that automatically sends these unusuable files, but everytime there was an update at work we went BACKWORDS. Ive been downloading and converting these files for 2 years. A pain. This program automatically converts them to mac friendly USABLE files (iCal, etc.). I used it ONCE and payed the registration fee. Its that good.
(1)
Fdefinojr
29 May 2007
Version: 1.7.3
A great little easy to install app that seamlessly allows you to get around those silly looking win.dat files without manual steps. If you need to receive files from business associates that send then in win.dat format because of the way their machines and software is configured, this app makes it easy and painless to view their attached files. The senders of win.dat files probably don't know that their files are being sent that way, and, with the broad array of software and operating systems in todays home and workplace, this app will take care of being sure that they mac user has no excuse to stay on a mac! In short, it seems to me that this app keeps up with how Apple keeps up and leads the way with their software. This app almost reminds me of something that is written to address the pc community that is still using programs that are years behind the mac and fixes it. Nice job Christopher!!
(0)
5
Makgeek
12 February 2007
Version: 1.6
Fantastic Program, should be built in. Apple make this guy an offer.
(0)
5
Kaspar
19 January 2007
Version: 1.5
Perfect little tool. Works flawlessly.
(0)
5
TomEck
18 September 2006
Version: 1.02
short: Perfect! - OMiC do what it says! long: The first version of OMiC was already very useful for me. Version 1.02 is however perfect for my purposes. OMiC simplifies the communication with users of outlook exquisitely. It is no longer necessary to do detours (e.g. TNEF's Enough), if you like to open the content of a winmail.dat. You can now see the schedules, appointments, files or V-Cards directly in the pull-down menue for attachments. OMiC simplified really the everyday life in a office. A really good investment! Between the version 1.0 and 1.02, Chris, the developer, and I had via a couple of e-mails an interchange of ideas. He always quickly reacted and was always very cooperatively. Do not hesitate to contact Chris, if you have any trouble with OMiC or any idea to advance OMiC!
(1)