Ok....let me make sure I get this right (because if I'm understanding you correctly, this is amazing!).

If I get my BB unlocked from Rogers and then slide in my Fido SIM card (with no changes to the card), I could get the same instant email (push) functionality as I'm currently getting? My current setup is I have an Exchange server that is set to automatically forward my email to my BWC. If I sign up for Mailstreet, how would it work - I would forward my Exchange to a mailstreet email address and it would then push it to my device? If I don't have a BWC account, how are they sending the email?

Is there anybody out there is currently doing this that can attest to how well the system works?