I have gmail,
bluepearldesign@gmail.com i use it when my other emails are offline.
I prefer to use emails with my own domain name on the end, because i believe this is more professional.
Personally if i was contracting a company/business to do work for me i would not initiate any sort of payment if the email address and URL didnt match unless i was 100% sure.
Ive read heaps of articles on the net about people that have been scammed by people pretending to be involved in a site but arent.