Managing Disk Quota with emails

[debi@niit.edu.pk]

Hi,

I have quota enabled for my users like /home/jed, which is working good. 
In ths same system sendmail is installed which stores emails like
/var/spool/mail/jed .

This way the users emails keep on comming with the junk and thats fills up 
my /var/spool/mail directory.

Is there a way to mange this situation ?? plz suggest.

Further can this be tackled if somehow the emails start getting stored in 
the users home directory like /home/jed/mail ?? if so then how can this be 
configured.

Regards

Debi