Thunderbird Email Client

Does NIS 2012 support thunderbird for email scanning or is it the real time that is protecting you from opening an attachment.  Also is LIveChat a free support?  I went to Symantec website a nothing mention about free 24/7 support like that for a current service with them.  Where would I find the free support with live person if there's such thing.  One last thing, how do they charge you if you use their support.