Rated 2 out of 5 stars

The Customize window shows no icons and does nothing in TB 17.

This review is for a previous version of the add-on (2.0.6). 

Rated 5 out of 5 stars

It DOES work perfectly in Thunderbird 12.0.1. You have to uninstall any existing version first, then install version 2.0.5.

This review is for a previous version of the add-on (2.0.5). 

Rated 3 out of 5 stars

CompactHeader does work in Thunderbird 12, but only partially. It narrows the message header pane as it's designed to do. However, the icons to delete, reply, etc. can not be installed in compact view, and the options to position the header at the left or right do not function.

This review is for a previous version of the add-on (2.0.2). 

Could you please test if version 2.0.4beta2 (in the development channel fixes these problems)

Rated 5 out of 5 stars

Very, very, very well done!

This review is for a previous version of the add-on (1.1.4).