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Windows 10 will reach EOS (end of support) on October 14, 2025. For more information, see this article.

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Add-ons, extensions, and themes

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Add-ons, extensions, and themes

Enhance product functionality with add-ons, extensions, and themes.

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Permission request messages for Thunderbird extensions

Filelink for Large Attachments

Thunderbird add-ons - frequently asked questions

Installing an Add-on in Thunderbird

Install themes to change the look of Thunderbird

How to Install and Use another Language in the Dictionary on Thunderbird

How to Customize Toolbars

Unable to install add-ons (extensions or themes) in Thunderbird

Certificates

Add-Ons FAQ

How can I digitally sign and encrypt emails?

Installing and Using another Language in the Dictionary

Unable to uninstall add-ons (extensions or themes)

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