I stop qmail, then I wait until there is a few new unsent mails. Since qmail has been stopped the mails will remain unprocessed and not end up in either the remote or the local queue. Therefore (at least on my system) neither qmHandle nor the qmail-qread will be able to list the mails.
Hmm, you are right - I didn't realise that qmail-qread didn't show unprocessed messages.
I just thought that there should be some way to read mails from the preprocessed queue, or?...
cd /var/qmail/queue/todo
Then view the first message:
cat ../mess/*/$(ls | head -1 | tail -1)
and the second:
cat ../mess/*/$(ls | head -2 | tail -1)
etc.
The sender and recipient addresses are embedded in the todo files, which you can see via:
cat $(ls | head -1 | tail -1)
cat $(ls | head -2 | tail -1)
etc.