Installing Plugin ================= Simply untar the file in the plugins directory, and make sure it is in its own directory, and that the name of the directory is the name of the plugin: $ cd /var/www/squirrelmail/plugins $ tar -xzvf /home/archives/folder_sizes-1.5-1.4.0.tar.gz Then go to your config directory and run conf.pl. Choose option 8 and add the plugin (+). Save and exit, then that should be all if the plugin was made correctly. :) $ cd ../config $ ./conf.pl Plugin adds own option block to SquirrelMail Folder Options page. "Folder Sizes" link is enabled by default in folder listing. Plugin translations use folder_sizes domain. folder_sizes.po and folder_sizes.mo files should be stored in same directory that stores squirrelmail.po and squirrelmail.mo files. Translations are maintained by SquirrelMail Internationalization Team and are distributed in SquirrelMail locale packages.