C:\Perl\bin>ppm> install Mail::Sender
Unrecognized ppm command 'Sender'; try one of area, config, describe,
  files, gui, help, install, list, log, query, remove, repo, search, tree,
  uninstall, update, upgrade, verify, or version
Usage:  ppm <cmd> <arg>...
        Run 'ppm help' to learn more.