SenderInvitation::checkAddresserEmail

protected function checkAddresserEmail(): void
{
	if ($this->context && Loader::includeModule('mail') && empty($this->context->getAddresser()->getMailto()))
	{
		$boxes = MailMailboxTable::getUserMailboxes($this->event['MEETING_HOST']);
		if (!empty($boxes) && is_array($boxes))
		{
			$this->context->getAddresser()->setMailto(array_shift($boxes)['EMAIL']);
		}
	}
}