Email Forwarding

I am looking for someone to forward batches (50-100 at a time to start) of email accounts to a "Master" account. For instance, I would give you a list of 100 email accounts and password and would need 99 of them forwarded to the 1 at the top of the list (the Master account). This would be on a pretty regular basis, so short turnaround times and good availability are key.