vu.edu.pk Mail space

I have below metioned message on the end of page of my mail. while i deleted all the mails in spam, inbox, sent. how to solve this problem.????

You are currently using 7592 MB (99%) of your 7593 MB

--
Kashif Nazir

MBA

--
You received this message because you are subscribed to the Google
Groups "vu-edu-pk" group.
 
To post to this group, send email to vu-edu-pk@googlegroups.com
 
For more options, visit this group at
http://groups.google.com.pk/group/vu-edu-pk?hl=en?hl=en