MailSecurity
enum in package klyn.mails

    public enum MailSecurity:

MailSecurity

SMTP transport security mode.

`NONE` uses plain TCP, `SSL_TLS` opens a TLS socket immediately and `STARTTLS` represents opportunistic TLS upgrade after a plain SMTP greeting.

`STARTTLS` is intentionally exposed at API level even though the current runtime cannot upgrade an existing `Socket` to `SSLSocket` yet.

    import klyn.mails

    print(MailSecurity.SSL_TLS)