=back
+=item B<reply-to> [string]
+
+Add a Reply-To: header to messages sent. Default: none.
+
=item B<bcc> [string]
Address to send blind carbon copies to when sending mail.
$message_entity->head->add("Subject", "Your signed PGP key 0x$key_id");
$message_entity->head->add("To", $address);
$message_entity->head->add("From", '"'.$CONFIG{'owner'}.'" <'.$CONFIG{'email'}.'>');
+ $message_entity->head->add("Reply-To", $CONFIG{'reply-to'}) if defined $CONFIG{'reply-to'};
$message_entity->head->add("Bcc", $CONFIG{'bcc'}) if defined $CONFIG{'bcc'};
$message_entity->head->add("User-Agent", $USER_AGENT);
$message_entity->send();