use Email::MIME::CreateHTML;
my $email = Email::MIME->create_html(
    header => [
      From => 'my@address',
      To => 'your@address',
      Subject => 'Here is the information you requested',
    ],
    body => $html,
    text_body => $plain_text
);

use Email::Send;
my $sender = Email::Send->new({mailer => 'SMTP'});
$sender->mailer_args([Host => 'smtp.example.com']);
$sender->send($email);