How to send mail with with UTL_MAIL
1. first you need to contact us to get acl opened. Please include all your users/schemas that needs to access this package.
use the following sample to send mail:
BEGIN
EXECUTE IMMEDIATE 'ALTER SESSION SET smtp_out_server = ''127.0.0.1''';
UTL_MAIL.send(sender => 'me@address.com',
recipients => 'you@address.com',
subject => 'Test Mail',
message => 'Hello World',
mime_type => 'text; charset=us-ascii');
END;
/