monitoring web-based email

[Curtis Vaughan <curtis@npc-usa.com>]

We have an issue where management wants to monitor possible leaks  
through the use of Hotmail, etc. web-based email accounts. They do  
not want to just prohibit usage of such accounts. So, the question  
is, using SQUID, is it possible to cache what information employees  
are passing through such accounts, even if they are https?

Thanks for any info.

Curtis