Google is introducing a new feature called Shielded Email to help improve the privacy and security of Gmail accounts.Shielded Email allows users to create unique one-off email address aliases to sign up for websites or services, protecting their main email address.Emails sent via the alias address are forwarded to the user's primary account, and users can identify who has shared or sold their email address.The availability and pricing of Shielded Email, whether it will be free or require a paid subscription, is currently unknown.