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Mozilla Thunderbird, Portable Edition Beta

email client

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Version 66.0 Beta 2 for Windows, English
40MB download / 172MB installed
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Mozilla Thunderbird, Portable Edition Beta can run from a cloud folder, external drive, or local folder without installing into Windows. It's even better with the Platform for easy installs and automatic updates.

Also Available: Mozilla Thunderbird, Portable Edition Stable


Mozilla Thunderbird, Portable Edition Test is a test version of the popular Thunderbird email client bundled with a Launcher as a portable app that is being made available for testing purposes only, and is intended for extension developers and our testing community. For everyday use, please use Mozilla Thunderbird, Portable Edition.

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App Notes

Install Note: This will install alongside a Mozilla Thunderbird, Portable Edition installation by default in a ThunderbirdPortableTest directory. It also supports upgrading existing installations by changing the location.

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Open Source Initiative

Mozilla®, Thunderbird® and the Thunderbird logo are registered trademarks of the Mozilla Foundation and are used with permission.