OPQ Net offers our clients free email mail boxes of an initial 2GB (firstname.lastname@example.org) with all our Internet services.
We also host domains and the email associated with the domain name. Customers can host their email domains on our mail servers or we can route email to customer's own mail servers.
All incoming email is scanned and filtered for SPAM (unsolicited email) and general viruses (virii?) whether the email is destined for mail boxes on our servers or routed to clients own mail servers. This process is done before mail is actually delivered anywhere. This saves on our clients resources (bandwidth, disk space and time!)
Our anti-SPAM techniques include industry standard and custom made tools which add up to a world class email system, virtually SPAM and virus free.
Wikipedia entry for Email - all you ever wanted to know but were afraid to ask.