QMail . delivery + start script

[kadoudal]

Is it possible to let Qmail perform the standard delivery and at the same time start a shell script ?
I wrote in the .qmail file of the mail

/var/qmail/mailnames/mydomain.com/information/.qmail
| true
| /usr/bin/deliverquota ./Maildir => to deliver the mail
| ./my_shell_script => to execute the script

/var/qmail/mailnames/mydomain.com/information/my_shell_script
#!/bin/sh
... my shell command
.. more

thanks for you suggestions