I updated the Evolution Email Client from 3.12 to 3.16 on Ubuntu Gnome 15.04. Version 3.16 has an archive feature I wanted to use that is not found on 3.12. I followed this blog, http://linuxpitstop.com/how-to-upgrade-evolution-email-client-to-3-16-on-ubuntu-15-04/#comment-3070, that had the installation instructions.