When I started this little thing a month and a half ago, I didn't expect anyone to notice it right away. The Internet is a big place and Rockets is, for now, quite small.
But a few people have found their way here (welcome guys!) and so I now need a way to send some welcome emails for new users.
I've added a function called (send-mail), which sends an email to a given address. Behind the scenes it uses the Unix command sendmail, so you will need to have that installed on your server (simply type "sudo apt-get install sendmail" on Ubuntu or Debian).
To avoid emails falling into spam traps, you need to be sending from a valid email address that has the same domain as the server that is sending it. The (send-mail) function will take care of all the headers and things automatically.
For example, for new users, I simply use:
(send-mail UserEmail "firstname.lastname@example.org" "Rocket Man" "Welcome to the newLISP on Rockets blog!" welcome-email)
where welcome-email is the string of the body of the email.