Haven't got all the info guys but noticed HostGator.com have $1.95 domains TODAY ONLY! https://register.hostgator.com/ I haven't used them for ages and never used them for mailing so can't recommend them for that. Perhaps someone else will chime in!
i got a couple and it doesnt appear to have DNS control? im on hold for 15 minutes now with chat support and some of the domain purchases are still 'pending'. interface sucks ass.