Google has announced that E2EMail, an experimental end-to-end encryption system, has now been given to the open-source community with no strings attached. Whether you are concerned about government surveillance and spying, man-in-the-middle (MiTM) attacks by threat actors or you are an enterprise player with the need to keep communications as secure and private as possible, end-to-end encryption is viewed as a method to prevent snooping.
Not every email service provider offers end-to-end encryption - the best-known being PGP - although, in the wake of former NSA contractor Edward Snowden's disclosures concerning the mass-spying efforts of the US government, more services have popped up or increased in popularity, including ProtonMail, Wire, WhatsApp, and Signal.
As we become more concerned with digital threats and surveillance, everything from email services to apps and social network chats is being locked up with cryptographic methods.
However, end-to-end encryption is yet to reach a wider audience -- and this is where Google intends to make a difference.