Limiting Size of User's Mailbox

Quick question.  Is there an easy way, without enforcing quotas, to stop
procmail from delivering mail to a user's inbox if is greater than a
certain size, and append append the incoming email somewhere else?

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Eric Woodward                     |          Office: 604.482.3400
Cyberstore Systems, Inc.          |          Fax:    604.482.3434
Vancouver, BC, Canada             |          E-mail: 
ejw(_at_)cyberstore(_dot_)ca(_dot_)
PGP Key Fingerprint =  86 CF 33 D9 61 A0 93 88  6C D7 D6 95 33 5B 47 AE