How does encryption enhance email security?

Encryption enhances email security primarily by making emails secure and unreadable to unauthorized users. When emails are encrypted, the content is transformed into a format that cannot be easily understood without the appropriate decryption key. This ensures that even if an email is intercepted during transmission or accessed by a malicious actor, the information remains confidential and secure.

The significance of encryption lies in its ability to protect sensitive data, such as personal information or corporate secrets, from being accessed or misused. This is particularly crucial in today's digital landscape, where email is a common vector for cyber threats, including data breaches and identity theft.

The other options do not accurately reflect the primary purpose of encryption. While some might think it makes emails easier to read or reduces file sizes, these attributes are unrelated to the fundamental goal of encryption, which is to secure information. Similarly, any perceived improvements in delivery speed are incidental and do not relate to the purpose of encryption for protecting email content.