End-to-end encryption (E2EE) is a type of encryption that keeps the data of emails private from everyone except the sender and target recipients. So, when E2EE is used, only the desired receiver gets to see the information decrypted. It is end-to-end, with the sender at one end and the receiver at the other. E2EE is like a confidential letter that goes through the mail in a sealed envelope and is for the receiver’s eyes only. A postman or any member of the postal service is not allowed to access the email information. Many tech giants like Facebook, WhatsApp, and Zoom use end-to-end encryptions to exchange chats among users safely. End-to-end email encryption is based on the same approach. Despite its popularity, E2EE has been embroiled in several controversies. For example, the UK government has been trying to ban E2EE for investigation restrictions. End-to-end encryption does not allow service providers to share data with the government. So, the UK government wants to enforce the Investigatory Powers Act, which asks Communication Service Providers (CSPs) to store every data of users on the internet and share it with the authorities.