How to send mail through oracle 10g

There is email package in oracle.
Either u can use smtp mail package in oracle 10g or
There are lot of third party mail packages using smtp. Example : demomail package is best one to send messages with attachment.

UTL_SMTP is the package from oracle to send email from an email client to the server.

To find more details visit:

New Oracle DBA (http://neworacledba.blogspot.com/)

I see that this answer is a little bit old, but I found example herehttp://www.sql-performance-tuning.com/oracle-reporting/

Maybe will help somebody.