Email::Sender replaces the old and sometimes problematic Email::Send library, which did a decent job at handling very simple email sending tasks, but was not suitable for serious use, for a variety of reasons. At present, the casual user is probably best off using Email::Send::Transport::Sendmail. If a local sendmail program is unavailable, Email::Send::Transport::SMTP will allow you to send mail through your relay host. In the future, Email::Sender::Simple will provide a very simple interface for sending mail.