[Mailman-Users] scheduled sending with mailman?

[zbigniew szalbot]

Hi there,

I wonder if it is possible to set up the following:

1. A mailman list is modereted so all posts are held for approval.
2. A cron script wakes up at certain time and approves a selected email.
3. This email gets sent to the list.

I need to make sure I send one email a day to a certain list and this 
cannot be send beforehand but each email must get sent on a specific 
day. No.1 is easy but is No. 2 possible?

Thanks!

Zbigniew Szalbot