All the protocols that end with S, (SMTPS,POP3S,ESMTPS,POP3S and HTTPS) use Security Socket Layer (SSL) encryption or Transport Layer Security (TLS) encryption to protect the contents of emails.
All the protocols that end with S, (SMTPS,POP3S,ESMTPS,POP3S and HTTPS) use Security Socket Layer (SSL) encryption or Transport Layer Security (TLS) encryption to protect the contents of emails.