Like any mail client editor, Google has to be at the forefront in the fight against spam. Admittedly technologies related to spam continue to grow … The engine will thus introduce a dose of artificial intelligence through “neural networks” systems in Gmail to refine the detection of these messages and avoid false positives which also tend to multiply.
The giant also think legitimate senders whose messages are considered spam. Besides a good practice guide that covers issues of identification and formats, Google offers Postmaster Tools, a new tool for the “mass Senders”. Again, this is to avoid false positives through analysis of shipping reports and reputation scores particular.
Google says that these technologies have helped raise 1 % three years ago to 0.1% the rate of undetected in Gmail spam. False positives would be increased from 1% to 0.05%.