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Yet Another Remove It Permanently Requires Restart
Remove elements and block content on Web pages.
Switch Message Colour Requires Restart
Adds a Toolbar-Button to Thunderbird to switch between the mails' original colouring and your user defined colouring.
Process Toggle
Toolbar panel for restarting the application with(out) multiple processes and for changing the maximum number of content processes (this requires Firefox 49 or newer).
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