Bigfoot is not a standard email provider, it is soley a forwarding/filtering/distribution service. There is no way you can use it to send outgoing messages - believe me I've tried! As Nigel says, your best bet is to register with the likes of hotmail, yahoo etc. My personal experience is that
www.excite.com seems to have one of the more efficient services. Unfortunately this is no consolation for those of us who's inconsiderate employer has banned such sites!