Download Letter Opener for macOS Mail

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The current version requires OS X 10.10 Yosemite or later, but you can download the last compatible version of Letter Opener Pro.

Download Version 7.0.5

Upgrade to macOS Sierra for free.

Visit the macOS Sierra page on the Mac App Store. Click the download button, and follow the onscreen instructions to begin your upgrade.

The current version requires OS X 10.10 Yosemite or later, but you can download the last compatible version of Letter Opener Pro.

Download Version 6.0.7

Upgrade to macOS Sierra for free.

Visit the macOS Sierra page on the Mac App Store. Click the download button, and follow the onscreen instructions to begin your upgrade.

Version: 9.0.3 released on: November 29, 2016
Compatible: macOS Sierra (Mail 10.2), OS X El Capitan (Mail 9.3) and OS X Yosemite

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Older Versions:

macOS Version 9 Version 8 Version 7 Version 6 Version 5
10.12 Sierra Intel
10.11 El Capitan Intel Intel
10.10 Yosemite Intel Intel Intel
10.9 Mavericks Intel Intel
10.8 Mountain Lion Intel Intel
10.7 Lion Intel Intel
10.6 Snow Leopard Intel Intel
Download 8.0.8 Download 7.0.5 Download 6.0.7 Download 5.1.2
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Double-click the Letter Opener Installer in Downloads

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Follow the Installers instructions

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Open macOS Mail application