Final answer:
S/MIME protocol is for securing email communications through encryption and digital signatures, which is a true statement.
Step-by-step explanation:
The statement is true. The Secure/Multipurpose Internet Mail Extensions (S/MIME) protocol is indeed designed for securing email messages. It offers two main features: encryption and digital signatures. Encryption ensures that only the intended recipient can read the content of the email, while digital signatures verify the identity of the sender and confirm that the message has not been altered in transit.