Фью
в блоке
$mail = new Mail();
$mail->protocol = $this->config->get('config_mail_protocol');
$mail->parameter = $this->config->get('config_mail_parameter');
$mail->hostname = $this->config->get('config_smtp_host');
$mail->username = $this->config->get('config_smtp_username');
$mail->password = $this->config->get('config_smtp_password');
$mail->port = $this->config->get('config_smtp_port');
$mail->timeout = $this->config->get('config_smtp_timeout');
$mail->setTo($order_info['email']);
$mail->setFrom($this->config->get('config_email'));
$mail->setSender($order_info['store_name']);
$mail->setSubject(html_entity_decode($subject, ENT_QUOTES, 'UTF-8'));
$mail->setText(html_entity_decode($message, ENT_QUOTES, 'UTF-8'));
$mail->send();
добавил строку $mail->setHtml($message);, после $mail->setText(html_entity_decode($message, ENT_QUOTES, 'UTF-8')); - получилось:
$mail = new Mail();
$mail->protocol = $this->config->get('config_mail_protocol');
$mail->parameter = $this->config->get('config_mail_parameter');
$mail->hostname = $this->config->get('config_smtp_host');
$mail->username = $this->config->get('config_smtp_username');
$mail->password = $this->config->get('config_smtp_password');
$mail->port = $this->config->get('config_smtp_port');
$mail->timeout = $this->config->get('config_smtp_timeout');
$mail->setTo($order_info['email']);
$mail->setFrom($this->config->get('config_email'));
$mail->setSender($order_info['store_name']);
$mail->setSubject(html_entity_decode($subject, ENT_QUOTES, 'UTF-8'));
$mail->setText(html_entity_decode($message, ENT_QUOTES, 'UTF-8'));
$mail->setHtml($message);
$mail->send();
Всё работает