Letter Opener

Open winmail.dat files

Available for macOS Sierra

Letter Opener for macOS Mail

Seamlessly and automatically converts winmail.dat files right inside your macOS Mail application. With Letter Opener the attachments appear like any others!

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Letter Opener Lite

With Letter Opener Lite open the occasionally winmail.dat attachment with just one double-click!

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Letter Opener Mobile

Get full-featured winmail.dat viewing power for iPhone & iPad that doesn't feel like you left some important features back at the office.

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DockStar adds extra badges to Mail's dock icon and clickable indicators to the menu bar. Intuitively monitor unread messages in more than one mailbox.

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macOS Sierra ready version for Letter Opener Pro is available.

September 20, 2016

Following the release of macOS Sierra 10.12, we are happy to provider our customers a version compatible version.

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