Exchange type mail


New Email
I have a small office setup, one server and two pcs running w764bit and one PCM running w732bit. I use outlook 2010 and would prefer to continue using. I have two generic email addresses for my company and several user specific. I would like to share the generic info@ and sales@ addresses but do not have the budget for a full blown exchange server. Has anyone got any recommendations.

Does IMAP work in an exchange way?

Basically I want to allow sharing of info@ and sales@ but be able to see what emails have been read and replied to on other devices such as office pcs and iPhones.