عن هذه الإضافة
By default, this extension prevents buttons from displaying in the message pane (including the compact header extension buttons). To restore them to the main toolbar, use the Customize menu option. Starting with version 1.3.0, the new options extension lets you restore them to the message pane if you prefer.
The Extra Folder Columns and Titlebar Tabs Cleaner extensions are also recommended.
Thanks for all of the bug reports! They are a big help in fixing issues with screens I don't use very often.
Added Lightning calendar support, based on 2.6 non-aero appearance.
Removed blue backgrounds from several dialogs (compose windows, address book sidebar, quick filter bar).
Fixed home screen spacing, and added new icons.
Various other small bugfixes, including borders and close icons.