For those who use their own domain with their MiiDuu store and would like corresponding e-mail accounts, such as firstname.lastname@example.org , Google Apps is a great free service.
You can sign up for Google Apps for free at http://www.google.com/apps/intl/en/group/index.html
After signing up Google Apps, you need to set up your DNS MX record. You can follow Google's instructions on how to configure email delivery at http://www.google.com/support/a/bin/answer.py?answer=33352
Google gives the follow example of how to set up your MX Record in GoDaddy: