While many people get communication forwarded from LinkedIn to their regular email accounts, it seems many do not. (inc.com)
For your regular email accounts, Google Apps is way to go. (spearsmarketing.com)
I've sent from my regular email account (that's the one that was labeled VIP even though there was no way for me to choose that option had I wanted to), I've sent new email with a different subject line (ie not a return to a VIP email), but it is always labeled as if she was my certain special someone and it is already causing me problems with this woman. (datingadviceguy.com)