Net::SMTPS - SSL/STARTTLS support for Net::SMTP

       Tomo.M <tomo at cpan.org>

       Constructor option 'Debug => (N)' (for Net::Cmd) also sets $IO::Socket::SSL::DEBUG when SSL  is  enabled.
       You can set 'Debug_SSL => {0-3}' separately.

       new ( [ HOST ] [, OPTIONS ] )
           A few options added to Net::SMTP(2.X).

           doSSL  {  "ssl"  |  "starttls"  |  undef  } - to specify SSL connection type.  "ssl" makes connection
           wrapped with SSL, "starttls" uses SMTP command "STARTTLS".

       Copyright  (c)  2020  Tomo.M All rights reserved.  This program is free software; you can redistribute it
       and/or modify it under the same terms as Perl itself.

perl v5.36.0                                       2022-10-16                                    Net::SMTPS(3pm)

       This module implements a wrapper for Net::SMTP, enabling over-SSL/STARTTLS support.  This module inherits
       most of all the methods from Net::SMTP(2.X). You may use all the friendly options that came bundled with
       Net::SMTP.  You can control the SSL usage with the options of new() constructor method.  'doSSL' option
       is the switch, and, If you would like to control detailed SSL settings, you can set SSL_* options that
       are brought from IO::Socket::SSL. Please see the document of IO::Socket::SSL about these options detail.

       Just one method difference from the Net::SMTP, you can select SMTP AUTH mechanism as the third option of
       auth() method.

       As of Version 3.10 of Net::SMTP(libnet) includes SSL/STARTTLS capabilities, so this wrapper module's
       significance disappareing.

       Most of all methods of Net::SMTP are inherited as is, except auth().

       auth ( USERNAME, PASSWORD [, AUTHMETHOD])
           Attempt SASL authentication through Authen::SASL  module.  AUTHMETHOD  is  your  required  method  of
           authentication,  like  'CRAM-MD5',  'LOGIN',  ...  etc.  If your selection does not match the server-
           offerred AUTH mechanism, authentication negotiation may fail.

       starttls ( SSLARGS )
           Upgrade existing plain connection to SSL.

       Net::SMTPS - SSL/STARTTLS support for Net::SMTP

       Net::SMTP, IO::Socket::SSL, Authen::SASL

           use Net::SMTPS;

           my $ssl = 'starttls';   # 'ssl' / 'starttls' / undef

           my $smtp = Net::SMTPS->new("smtp.example.com", Port => 587, doSSL => $ssl);