+.PP
+If
+.B nmh
+has been compiled with TLS support, the
+.B \-tls
+switch will require the negotiation of TLS support when connecting to the
+SMTP MTA. Encrypted data is labelled with `(tls-encrypted)' and
+`(tls-decrypted)' when viewing the SMTP transction with the
+.B \-snoop
+switch.