$tested_tags = implode(', ', array_unique($matches[1]));
$message .= ' (' . $tested_tags . ')';
$result = MailFormatHelper::htmlToText($html, $allowed_tags);
$tested_tags = implode(', ', array_unique($matches[1]));
$message .= ' (' . $tested_tags . ')';
$result = MailFormatHelper::htmlToText($html, $allowed_tags);