While TLS encryption provides significant security benefits, it has its limitations:
End-to-End Encryption: TLS only encrypts data in transit. Once the email reaches the recipient's server, it may be stored unencrypted. Compatibility Issues: If the recipient's email server does not support TLS, the email may be sent unencrypted. Phishing: TLS cannot protect against phishing attacks. Additional measures, such as SPF, DKIM, and DMARC, should be used.