The unit can be set up to send emails. Among several packages available, ssmtp is a nice and simple solution for sending emails from the command line without having to install a mail server. Yet, it is perfectly compatible with the mail() function of Php.
$ apt-get install ssmtp mailutils
To make the ssmpt work, first edit the config file:
$ nano /etc/ssmtp/ssmtp.conf
Chooe an smtp service, for example smtp.gmail.com, and specify an authorized account.
Examples to send an email from the command line:
$ echo "Testing" | mail -s "subject_msg" mail_address
$ mail -s "subject" mail_address1,mail_address2 < mail_contents.txt