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Hasiera
Thunderbird
Add-ons, extensions, and themes

Add-ons, extensions, and themes

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

In English

Filelink for Large Attachments

Thunderbird add-ons - frequently asked questions

Permission request messages for Thunderbird extensions

Install themes to change the look of Thunderbird

Installing an Add-on in Thunderbird

How to Customize Toolbars

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

Certificates

Add-Ons FAQ

How can I digitally sign and encrypt emails?

Installing and Using another Language in the Dictionary

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

Unable to uninstall add-ons (extensions or themes)

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