Klammer open EML, MSG, OFT and Winmail.dat files on iOS devices


Thanks to all customers that helped us on the way!

One of the top 100 Business Applications on the App Store

Highly rated by CNET users - numer 26 in Calendar & Time Management Software

Klammer got in top 10 Productivity applications on the Appanie lising

What is it all about

Klammer allows you to open EML, MSG, OFT and Winmail.dat files on iOS devices and view their contents and attachments. All that business communication your device did not view in the Mail application is now accessible to you with just one touch. Please note support for opening MSG files is available only after a paid in-app purchase.

What are EML files?
The most convenient way to forward business communication is to send e-mails as an attachment - usually EML files. They contain all the email's body, attachments, sender and everything. With this application you will be able to access and view it all with ease.

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

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.

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.

Features: Reqired iOS 4.3 for iPhone.

Check out some screenshots from the application

The application is developed and maintained by Kupon Bg Ltd.


  1. Open the Mail application on your iPad or iPhone
  2. Open the email with the attached file you want to view
  3. Scroll to the bottom of the email where the attachments are. If the file you want to open is downloaded it will have the blue Klammer icon in fron of it. If not - touch it to download it first. You should see a blue progress bar during the process
  4. Once the attachment is downloaded in the email - touch the file and a menu pops up
  5. Touch the "Open in Klammer" button
  6. The attached file will be viewed in the application

If you want to open the same file again - just start the Klammer application and locate it there

Instead of long tapping the EML file in the Mail application you can just touch it and in the window that opens select "Open in" in the top right corner

How to open Winmail.dat / MSG / EML / OFT files from iDisk?

This and some other common questions you can find the answered here:

Frequently asked questions

Contact us

This product is developed and maintained by Kupon.BG - your mobile applications developer
Copyright © 2018 Kupon Bg Ltd
All rights reserved