Welcome to Firefox for Android Add-ons.

Add extra features and styles to make Firefox for Android your own.

Close

On the go?

Check out our Mobile Add-ons site.

Close

Header Tools Improved Version History

19 versions

Be careful with old versions!

These versions are displayed for reference and testing purposes. You should always use the latest version of an add-on.

Version 4.9 42.3 KiB Works with Thunderbird 128.0 - *

Set minimum version to Thunderbird 128.0.
Set maximum version to Thunderbird 136.*.

Download Now Download Anyway

Version 4.8 41.4 KiB Works with Thunderbird 126.0 - *

ESMified the add-on.
Fixed deleting original messages for Thunderbird 126.
Set minimum version to Thunderbird 126.0.
Set maximum version to Thunderbird 129.*.

Download Now Download Anyway

Version 4.7 41.5 KiB Works with Thunderbird 115.0 - 125.*

Fixed deleting original messages for Thunderbirds 115 through 125.
Set maximum version to Thunderbird 125.*.

Download Now Download Anyway

Version 4.6 41.6 KiB Works with Thunderbird 115.0 - 129.*

Tweaked the header details dialog.
Fixed sometimes creating zero byte files in Trash.
Set maximum version to Thunderbird 129.*.

Download Now Download Anyway

Version 4.5 41.4 KiB Works with Thunderbird 115.0 - 129.*

Fixed deleting original messages for Thunderbird 127.
Set minimum version to Thunderbird 115.0.
Set maximum version to Thunderbird 128.*.

Download Now Download Anyway

Version 4.4 41.5 KiB Works with Thunderbird 111.0 - 127.*

Fixed failing full source warning dialog.
Added French locale, thanks to DenB for the translation.
Set maximum version to Thunderbird 126.*.

Download Now Download Anyway

Version 4.2 40.4 KiB Works with Thunderbird 111.0 - 125.*

Switched to the WebExtension i18n locale system.
Added Dutch locale.
Improved header case detection (ID/Id/id).
Set maximum version to Thunderbird 125.*.

Download Now Download Anyway

Version 4.1 39.2 KiB Works with Thunderbird 111.0 - 125.*

Fixed Message-ID duplication on messages from outlook.com.
Set maximum version to Thunderbird 123.*.

Download Now Download Anyway

Version 4.0 39.1 KiB Works with Thunderbird 111.0 - 116.*

Due to Supernova changes in Thunderbird now only works with opened messages.
The Message list context menu is now hidden when no message is visible.
The Message menu submenu was removed.
The font-family for the full source editor was changed to monospace.
Set minimum version to Thunderbird 111.0.
Set maximum version to Thunderbird 115.*.

Download Now Download Anyway

Version 3.9 32.1 KiB Works with Thunderbird 91.0 - 110.0

Small CSS fix in the header details dialog.
Removed some obsolete version checking.
Set maximum version to Thunderbird 102.*.

Download Now Download Anyway

Version 3.8 32.3 KiB Works with Thunderbird 91.0 - 102.0

Added editing of In-Reply-To headers.
Set minimum version to Thunderbird 91.
Fixed deleting References headers.

Download Now Download Anyway

Version 3.7 32.0 KiB Works with Thunderbird 78.0 - 102.0

Added German locale, thanks to Johannes Kayßer for the translation.

Download Now Download Anyway

Version 3.6 30.8 KiB Works with Thunderbird 78.0 - 102.0

UTF-8 encoded Reply-To headers are now decoded, editing is re-enabled.

Download Now Download Anyway

Version 3.5 32.6 KiB Works with Thunderbird 78.0 - 94.0

Following the name change chrome and preferences had to be renamed too.
All HeaderTools Lite preferences are migrated to Header Tools Improved.

Download Now Download Anyway

Version 3.3 31.9 KiB Works with Thunderbird 78.0 - 94.0

The original version of Header Tools Lite has been revived.
To avoid confusion this add-on has been renamed to Header Tools Improved.
The add-on homepage was also changed, please adjust any shortcuts you may have:
https://addons.thunderbird.net/en-US/thunderbird/addon/header-tools-improved

Download Now Download Anyway

Version 3.1 31.6 KiB Works with Thunderbird 78.0 - 94.0

Fixed buggy Change header details dialog.
Added some fixes for Thunderbird 91.

Download Now Download Anyway

Version 2.3 18.3 KiB Works with Thunderbird 68.0 - 68.*

Fixed the shortcut keys, removed obsolete localization.
Improved handling of References headers.

Download Now Download Anyway

Version 2.2 18.0 KiB Works with Thunderbird 68.0 - 68.*

Added Options items to the Context & Message menus.
Disabled buggy Reply-To editing, it is read-only now.

Download Now Download Anyway

Version 2.1 17.8 KiB Works with Thunderbird 68.0 - 68.*

Tweaked numberbox appearance.
Added homepage & changelog.
Tweaked the source editor.

Download Now Download Anyway