About this Add-on
Keyboard shortcut Alt-D toggles between compact and expanded headers.
Double clicking the header area toggles between compact and expanded headers.
Adds a context menu to the header area with options for the extension:
- Display compact headers on a single line.
- Replace the header toolbar with the recipient or, when reading news feeds, the link to the website (only in double line compact mode).
- View all or normal expanded headers.
Please use the provided support email address for bug reports.