Leasing email addresses & subdomains

TuCows offers a service (RealNames) in which you can get a custom email address for $35/year if you want something more memorable than Gmail, Yahoo, etc.

They say: "At the heart of RealNames is a unique portfolio of name-based domains. RealNames lets anyone create and use a memorable and more meaningful email address that's based on their own first and last name."

My question: I own about 400 dotcom domain names that are primarily medical-geo domains (MemphisCancer.com,…

Leasing email addresses & subdomains