Here’s how to use gnubiff, a cool mail notification program for Linux Mint / Ubuntu which supports multiple mailboxes, pop3, apop, imap4, mh, qmail, mailfile as well as SSL & certificates: 1. Issue the following command at the terminal: sudo apt-get install gnubiff 2. After the installation is complete, right-click on the Gnome desktop panel and select ‘Add to Panel…’. 3....