Secure email refers to the use of encryption and other security measures to protect the content of email messages from unauthorized access. This ensures that only the intended recipient can read the message, safeguarding sensitive information such as personal data, financial details, or confidential business communications. To achieve secure email, various protocols and technologies are employed, including PGP (Pretty Good Privacy) and S/MIME (Secure/Multipurpose Internet Mail Extensions). These methods encrypt the email content and attachments, making it difficult for hackers or eavesdroppers to intercept and decipher the information during transmission.