I did a WHOIS on the domain, gmail.com.

Here are the results.

Registrant:
Google Inc. (DOM-425410) 2400 E. Bayshore Pkwy Mountain View CA 94043 US

Domain Name: gmail.com

Registrar Name: Alldomains.com
Registrar Whois: whois.alldomains.com
Registrar Homepage: http://www.alldomains.com

Administrative Contact:
DNS Admin
(NIC-1467103) 
Google Inc.
2400 E. Bayshore Pkwy Mountain View
CA
94043 US
dns-admin@google.com +1.6503300100 Fax- +1.6506188571
Technical Contact, Zone Contact:
DNS Admin
(NIC-1467103) 
Google Inc.
2400 E. Bayshore Pkwy Mountain View
CA
94043 US
dns-admin@google.com +1.6503300100 Fax- +1.6506188571

Created on..............: 1995-Aug-13.
Expires on..............: 2006-Aug-12.
Record last updated on..: 2004-Mar-31 16:50:22.

Domain servers in listed order:

NS1.GOOGLE.COM        216.239.32.10
NS2.GOOGLE.COM        216.239.34.10
NS3.GOOGLE.COM        216.239.36.10
NS4.GOOGLE.COM        216.239.38.10</i>

I have a feeling that if they ever did come out with an email service, that it would not have 1GB of storage per person.