14 DAY TRIAL // Gmail is the mail solution provided by the search giant, currently available for free for all the Internet users. Gmail was released in April 2004 and was available only by invitation but the company recently decided to make it a public beta. Since the launch of the product, Gmail was regarded as the mail solution that provides the biggest amount of file storage size but now, after the product was released from the private beta, Gmail represents the most secure antivirus service.
At this time, Gmail is the most powerful rival for Yahoo's mail service that is often criticized for the weakness of its spam filters, allowing the inboxes to be invaded by numerous unwanted messages. In comparison to the giant portal's tool, Gmail receives praises for the spam filters because the entire unwanted content is redirected to a specially created spam folder.
Today, Google granted a new patent able to increase the spam filters of the mail solution, by using e-mail sources lists to check the sender's address. The patent was filed in April 3, 2003 and is signed by Steven Kirsch.
"The origin address of an e-mail message is validated to enable blocking of e-mail from spam e-mail sources, by preparing, in response to the receipt of a predetermined e-mail message from an unverified source address, a data key encoding information reflective of the predetermined e-mail message. This message, including the data key, is then issued to the unverified source address," it is mentioned in the description of the patent.
In fact, the technology works really simple because it is based on some huge list with the sender's address. Every new mail sent to Gmail's inbox is checked and filtered through the lists, checking the sender's ID and allowing or restricting the mail message.