Mark All Read Button

The Mark All Read Button is an extension for Thunderbird that adds a useful feature to the toolbar and various menus. With this extension, users can quickly perform the 'Mark All Read' function, which is typically found in the "Message...Mark...All Read" menu, folder pane folder context menu, thread pane, and message pane context menu "Mark...All Read". The extension places an icon on these menu items as well, which can be seen as a tick with 3 green dots.

The Mark All Read Button is compatible with Thunderbird 2.0 and has some basic requirements, including Thunderbird 1.5 - 2.0.0.*. To install the extension, users can easily download and save the file to their hard disk by right-clicking the link below and choosing "Save Link As...". Afterward, open Add-ons from the Tools menu in Mozilla Thunderbird, click the Install button, and locate/select the file you downloaded and click "OK".

Once installed, the extension can be customized by right-clicking on the toolbar, selecting Customise..., and dragging the Mark All Read button to the toolbar wherever you want it. For users who don't wish to see the "Message...Mark...All Read" menu item or context menus show an icon, the extension has provided solutions. For removing the icon from the "Message...Mark...All Read" menu item, users will have to insert the given code into their userChrome.css file: #folderPaneContext-markMailFolderAllRead { list-style-image: none !important; }. And for removing the context menus to show an icon, they can use the following code: menuitem[label="All Read"] { list-style-image: none !important; }.

Overall, the Mark All Read Button is a simple yet effective extension that delivers effortless mailbox management to Thunderbird users. Its functionality, easy installation process, and customizable options make it a must-have add-on for anyone who frequently uses Thunderbird.