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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

What's New

Version 9.0.1:
  • Compatibility for macOS Sierra 10.12.1 Beta (Mail 10.1).


  • OS X 10.10 or later

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Letter Opener Pro User Discussion

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5 41


Current Version (9.x)


Downloads 72,524
Version Downloads 23
License Shareware
Date 25 Oct 2016
Platform Intel 64 / OS X
Price $39.99
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