Developer: Kupon.BG Ltd

Current Version: 3.1

Last Updated: 9 months ago

Download Size: 1.2 MB - Download


Open Winmail.dat, MSG and OFT files on your Mac and view their contents and attachments.

"Klammer is very good at what it does..." - Jeffery Battersby, MACWORLD

"Bulk Convert" add-on now FREE!


- View MSG files
- View Winmail.dat files
- View OFT files
- Access attachments, body and message details of the emails
- Supports displaying rich-formatted message body - inline images, links, formatted text, tables and everything
- Export emails to EML files, natively supported by Mac OS
- Open emails in other application - Mail, Outlook, Thunderbird and others
- Supports viewing MSG, OFT and Winmail.dat files that contain contacts, appointments, calendar events and tasks
- Import contacts to Address Book
- Save contacts to vCard
- Import appointments and calendar events to iCal
- Export appointments, calendar events and tasks to vCalendar (.ics) files
- Quick Look attachments in MSG, OFT or Winmail.dat files
- Spotlight integration allows you to search all text information in MSG, OFT and Winmail.dat files - subjects, text content, contacts and even attachments names
- Seamless integration with the OS - Quick Look and Preview of MSG, OFT and Winmail.dat files
- Easy access recently opened files
- Integrated with your Address Book

Bulk convert MSG, OFT and Winmail.dat files (Upgrade via FREE In-App Purchase)

Bulk Convert is a feature of Klammer that allows you to convert multiple MSG, OFT and Winmail.dat files to the format corresponding to their contents - .EML for emails, .ICS (iCal) for tasks and appointments and .VCF (vCard) for contacts. It is as simple as selecting source and destination folder and all your archive of Outlook exports will be transformed to Mac OS friendly formats. Seamless integration with Mountain Lion 10.8 Notification Center - never miss when your files are converted.

Availability Notice!
The Bulk Convert feature is available only on Macs running Mac OS 10.7 Lion or later after an additional FREE upgrade!

What are MSG files?
MSG (outlook mail message files) are messages created or saved within Microsoft Outlook. They can contain emails, contacts, tasks, task requests, appointments and etc.

What are Winmail.dat files?
Outlook and other applications often encode the messages and their attachments in a Winmail.dat file. This application will
allow you to view that file and access the attachments and the encapsulated information for the email.

What are OFT files?
E-mail templates used by Microsoft Outlook. Contains a pre-formatted layout that can be used for creating custom messages with a similar look and feel

Please, use [email protected] to contact us. We cannot reply to user reviews! Thank you.


Release Notes:

Improved support for Korean charsets
Minor bugfixes


Most Helpful Reviews

Version 1.2
Review by Telstar1948

Klammer - This app is perfect for my needs. Years ago I moved to the Mac from Windows and had a potload of emails that I can now easily open and use with no more effort than double-clicking on them. Great for archived stuff too since I no longer use Windows. Also great for the occasional Windows user who emails me an attachment in winmail.dat or MSG format! Superb app that I wanted years ago but either couldn't find it or it just wasn't around then. Good job!

Found helpful by 6 out of 6 people
Version 2.2
Review by Jalwitt

Didn't work for me - bulk import extra cost - I was about to purchase emailchemy for $30 to convert a bunch of .msg files. Then I saw a thread on Apple support pointing me to this $5 app. Looked great so I purchased it. Then I found out it was an additional $10 for bulk processing. Before spending the $10 I tried one message -- opened the .msg file but couldn't read it or its attachment. Then I tried to open in Mac Mail but it said the app wasn't installed (it is installed and used frequently). So it looks like I wasted $5.

Found helpful by 6 out of 7 people

More Reviews for Current Version

Version 3.1
Review by jon8994

Bulk Converter - another $9.99 in app purchase. - Purchased to view .msg files on macbook. I wanted to use the bulk converter. However [and this is my fault as well for not reading the small print] after paying $8 for this app you have to pay another $10 for the bulk converter. Get MailRaider for $7.99 to do the bulk convertion. Bad form Klammer!

Found helpful by 4 out of 5 people
Version 3.1
Review by .

QuickLook works! - Bought Klammer solely for the advertised QuickLook viewer, to allow viewing of .msg files in the Finder. It works great!

Found helpful by 2 out of 2 people
Version 3.1
Review by KKmii

Perfect for reading Windows Outlook emails on my Mac - This is perfect for my purposes - I use a Windows computer at work but synchronize all the files onto my Mac for working at home. I bought Outlook for Mac and I can import email folders into the Mac that way, but for the individual email files saved in various non-email folders, Klammer allows me to read them and makes it easy to go back and forth between the two computers. For $5, this was well worth it!

Found helpful by 2 out of 2 people
Version 3.1
Review by bobchi

Great if changed to mac from PC and have lots of msg files - I switched from a PC to a mac, but still use Outlook. I had thousands of emails saved in hundreds of folders. Klammer lets me read and forward them. I bought bulk convert. Once purchased it's good for life. It converted the thousands of files into the same folders, by choosing the destination file as the same as the source file. Worked great. Not sure I needed to do the bulk convert, since I could read any msg file anyway. Customer support returned my email question in less than 24 hours and did a follow up email. Works fast. Installs fast. I don't give hardly any apps 5 stars, this is a very high rating by my standards.

Found helpful by 12 out of 12 people
Version 3.1
Review by RobShort

TNEF/Winmail.dat Quick Look Integration Sort of Works - I bought this solely because I have one unignorable sender who uses Outlook. Her emails always include a sig in the form of an image, which Klammer shows me in quick look no problem. However, when I quick look a winmail.dat file, if there are other attachments in it, I’m unable to open them from preview—I have to launch Klammer and then save them. If I could see an icon for, say, a MS Word file in the quick look preview and then double-click the Word icon to open the attachment in Word that would be *really* rad. Thing is, I can see that there are attachments in the quick look—I just can’t open them from the preview window.

Found helpful by 1 out of 1 people