It seems that a plain pp call, even with the -x flag, does not trigger all of the libraries, but packing works under pp_autolink.
You could also add these lines to the script, assuming in your case you always want to use them anyway:
IO::Socket::SSL->start_SSL($SERVER, SSL_version => 'TLSv1_2', SSL_
+verify_mode => 0 );
When I run the exe I can get the usage information.
However, I have not tested if sending emails actually works, and that might be the next point of failure, leading to your other reply in 11131180.