From en.secnews.gr
Mozilla has created a new email messaging service called Firefox Private Relay. The purpose of this service is: users to give “email nicknames” whenever a company or service asks them to give it address of their email. This way, they will be able to avoid putting their real email address and therefore protecting it ID card their and their personal information. This new service is currently in an experimental stage and is only available as an extension browser for Firefox. In addition, users should request an invitation to site to receive it.