You can set this up using a gmail account and filters so that the email goes to the gmail and gets forwarded to as many email adresses as you like. Check out my tutorial here http://forum.webflow.com/t/multiple-forms-going-to-different-emails-workaround/10442
Doesn’t solve the reply directly to the email issue though.
I should mention to anyone doing a php script, form validation WILL NOT WORK in safari! Spammers will spam the crap out of you if you haven’t built in spam protection into your script and anyone can push submit without entering anything, which will just send you tons of blank emails.