show mails from only one account in kmail tray icon

Hi All,

I am using kmail 1.13.7, kde 4.6.3 on Gentoo.
I have one company mail account with 2 personal accounts configured in kmail. 
What i need is that tray icon shows number of unread mails only from my 
company account and not from personal accounts. I have subscribed to many 
mailing lists in my personal accounts and it is a bit distracting that tray 
icon shows so many unread mails.

thanks,
randd
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