Send Email through PL/SQL

The short procedure can be used to send a mail through PL/SQL.
Although there is a limitation to this as the code below does not allow you to send attachments. This can only be used to send text messages.

CREATE OR REPLACE PROCEDURE email_message (
   from_name   VARCHAR2
 , to_name     VARCHAR2
 , subject     VARCHAR2
 , MESSAGE     VARCHAR2
)
IS
   l_mailhost    VARCHAR2 (64)       := 'server.com';
   l_mail_conn   UTL_SMTP.connection;
BEGIN
   l_mail_conn := UTL_SMTP.open_connection (l_mailhost, 25);
   UTL_SMTP.helo (l_mail_conn, l_mailhost);
   UTL_SMTP.mail (l_mail_conn, from_name);
   UTL_SMTP.rcpt (l_mail_conn, to_name);
   UTL_SMTP.open_data (l_mail_conn);
   UTL_SMTP.write_data (l_mail_conn
                      ,    'Date: '
                        || TO_CHAR (SYSDATE, 'DD-MON-YYYY HH24:MI:SS')
                        || CHR (13)
                       );
   UTL_SMTP.write_data (l_mail_conn, 'From: ' || from_name || CHR (13));
   UTL_SMTP.write_data (l_mail_conn, 'Subject: ' || subject || CHR (13));
   UTL_SMTP.write_data (l_mail_conn, 'To: ' || to_name || CHR (13));
   UTL_SMTP.write_data (l_mail_conn, Message );

   UTL_SMTP.close_data (l_mail_conn);
   UTL_SMTP.quit (l_mail_conn);
END;
/

Emails with attachment can be done using Java as a wrapper. The metalink Note:120994.1 has a very good explanation on how to create a program that facilates sending emails with attachment.