public static function find_trusted_emails($user_id)
	{
		if (empty($user_id) || !is_numeric($user_id))
		{
			return false;
		}

		$results = self::all()
			->whereEquals('user_id', $user_id)
			->rows()
			->fieldsByKey('email');

		if (empty($results))
		{
			return false;
		}

		return $results;
	}