number of receipents in hotmail message

i want to send a note to many, over 50, people and use hotmail to do it and i keep getting a rejection note The server reported this error.
Account: ‘Hotmail’, Server: ‘http://services.msn.com/svcs/hotmail/httpmail.asp’, Protocol: HTTPMail, Server Response: ‘Too many recipients’, Port: 0, Secure(SSL): No, Error Number: 0x800CCC3C

how many recipients can i use and how can I increase it. i have spent over 4 hours trying to get to MSN and no luck there.