Download Letter Opener for macOS Mail
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The current version requires macOS 10.10 Yosemite or later, but you can download the last compatible version of Letter Opener for macOS Mail.
Upgrade to macOS Sierra for free.
Visit the macOS Sierra page in the Mac App Store. Click the download button, and follow the onscreen instructions to begin your upgrade.
The current version requires macOS 10.10 Yosemite or later, but you can download the last compatible version of Letter Opener for macOS Mail.
Upgrade to macOS Sierra for free.
Visit the macOS Sierra page in the Mac App Store. Click the download button, and follow the onscreen instructions to begin your upgrade.
Version: 14.1.3 released on: Mar 8, 2022
Compatible with macOS Monterey, macOS Big Sur, macOS Catalina, and macOS Mojave.Note: Starting with 13.0.1 Letter Opener is compatible with
Apple silicon hardware.
Older Versions
macOS Version 11 Version 10 Version 9 Version 8 Version 7 10.14 Mojave Intel 10.13 High Sierra Intel Intel 10.12 Sierra Intel Intel Intel 10.11 El Capitan Intel Intel Intel Intel 10.10 Yosemite Intel Intel Intel Intel 10.9 Mavericks Intel Download 10.0.1 Download 9.1.9 Download 8.0.8 Download 7.0.5
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Double-click “Install Letter Opener.pkg” in Downloads. Follow the Installers instructions.

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Activate Mail Integration
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You’re All Set