How to see the subject of emails queued

[voltron81]

Hi to everybody.
I've a mailserver based on postfix.
I'm queueing all the emails that try to be sent.
After that I'm managing the queue with the output of mailq

But in this way I'm just able to have this details of the queued mails: sender, receiver, size, time.

There is a way to see also the subject of that emails?

Thanks
MiK