Howto know number of messages in all mbox ?

[Didier BRETIN <didier@xxxxxxxxxx>]

Hello,

Is there a way, with or without mutt, to know the number of new mails in all
my mailboxes, mailbox by mailbox ? What I would like is to have for example:

  18 inbox
  5 mutt-users
  7 rails-spinoffs

If there is no direct command to have this, perharps I can use some python
or perl script to parse a mailbox and then found the new messages ? Where is
recorded the state of an e-mail ?

If someone can help me with theses questions, I would be happy ;).

Regards.
--
Didier BRETIN
http://www.bretin.net/