For a higher-level abstraction, also consider Email::Send.

From the synopsis:

  use Email::Send;

  my $message = <<'__MESSAGE__';
  To: recipient@example.com
  From: sender@example.com
  Subject: Hello there folks
  
  How are you? Enjoy!
  __MESSAGE__

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