+
+ /**
+ * Wrapper around the mail() method (mainly used to overwrite for tests)
+ * @see mail()
+ *
+ * @param string $to Recipient of this mail
+ * @param string $subject Subject of this mail
+ * @param string $body Message body of this mail
+ * @param string $headers Headers of this mail
+ * @param string $parameters Additional (sendmail) parameters of this mail
+ *
+ * @return boolean true if the mail was successfully accepted for delivery, false otherwise.
+ */
+ protected function mail(string $to, string $subject, string $body, string $headers, string $parameters)
+ {
+ return mail($to, $subject, $body, $headers, $parameters);
+ }