You'll probably have much better luck using this module: Mail::Webmail::Gmail
It has a fully featured interface to gmail, inclusive of sending and receiving mail.

use Mail::Webmail::Gmail;

my $gmail = Mail::Webmail::Gmail->new( 
            username => 'username', password => password',
        );
$gmail->send_message( to => 'user@domain.com', subject => Test Message
+', msgbody => 'This is a test.' );
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