"Make your business personal with Namecheap. Get ad-free private email together with a personal .BIZ domain for only $0.98 today! Please note that the offer is limited to 5 domains per household or entity."
*Please Note:
Offer is limited to 5 .BIZ domains per household or income. (Huh?)
Offer is valid till supplies last.
Offer is valid for the first year .BIZ registration only, renews at the regular price.
I came across this while trying to get NameCheap to close/remove a scam fraud hosting account. See forum thread http://www.ozbargain.com.au/node/117298 for details.
Hope it may be useful for some, at least for a year.
If you want email on your own domain name, you can try outlook.com which has domains capability: https://domains.live.com you can have 50 accounts.