No, you can't. Mail for Exchange can only be used to set up one Active Sync supported account at a single point of time.
- How can I recover/reset/restore my phone software?
- I cannot send or receive email
- My phone does not recognise my SIM card
- My phone does not charge
- Where can I find information about WhatsApp, Skype, Angry Birds, Twitter, NimBuzz, Viber, Fring, or some other non-Microsoft application (3rd party application)?