Base::getFeatures

public function getFeatures($entityTypeId, $entityId)
{
	if(!Loader::includeModule("mail"))
	{
		return null;
	}

	$activities = ActivityTable::getList([
		"select" => ["ID", "COMPLETED", "START_TIME", "END_TIME", "CREATED", "DIRECTION", "SUBJECT", new ExpressionField("DESCRIPTION", "DESCRIPTION")],
		"filter" => [
			"=PROVIDER_ID" => \Bitrix\Crm\Activity\Provider\Email::getId(),
			"=PROVIDER_TYPE_ID" => 'EMAIL',
			"=BINDINGS.OWNER_TYPE_ID" => $entityTypeId,
			"=BINDINGS.OWNER_ID" => $entityId,
		],
		"order" => [
			"START_TIME" => "desc"
		],
		"limit" => static::MAX_MESSAGES
	])->fetchAll();

	// EMAIL_COUNT_TOTAL
	$result["EMAIL_COUNT_TOTAL"] = count($activities);

	// EMAIL_COUNT_LAST_WEEK
	$weekBefore = clone $this->currentDate;
	$weekBefore->add("-1 weeks");
	$mailLastWeek = FeatureBuilder::filterActivitiesByDate($activities, $weekBefore, $this->currentDate);
	$result["EMAIL_COUNT_LAST_WEEK"] = count($mailLastWeek);

	// EMAIL_COUNT_LAST_MONTH
	$monthBefore = clone $this->currentDate;
	$monthBefore->add("-1 weeks");
	$emailLastMonth = FeatureBuilder::filterActivitiesByDate($activities, $monthBefore, $this->currentDate);
	$result["EMAIL_COUNT_LAST_MONTH"] = count($emailLastMonth);

	// EMAIL_COUNT_OLDER_MONTH
	$from = DateTime::createFromTimestamp(0);
	$emailOld = FeatureBuilder::filterActivitiesByDate($activities, $from, $monthBefore);
	$result["EMAIL_COUNT_OLDER_MONTH"] = count($emailOld);

	// EMAIL_OPERATOR_TEXT
	$messages = array_filter($activities, function($act){return $act["DIRECTION"] == \CCrmActivityDirection::Outgoing;});
	$messages = array_map(
		function($act)
		{
			return FeatureBuilder::clearText($act["SUBJECT"] . " " . $act["DESCRIPTION"], static::MAX_WORDS_IN_MESSAGE);
		},
		$messages
	);
	//$result["EMAIL_OPERATOR_TEXT_RAW"] = join(" ", $messages);
	$result["EMAIL_OPERATOR_TEXT"] = join(" ", $messages);

	// EMAIL_CLIENT_TEXT
	$messages = array_filter($activities, function($act){return $act["DIRECTION"] == \CCrmActivityDirection::Incoming;});
	$messages = array_map(
		function($act)
		{
			return FeatureBuilder::clearText($act["SUBJECT"] . " " . $act["DESCRIPTION"], static::MAX_WORDS_IN_MESSAGE);
		},
		$messages
	);
	//$result["EMAIL_CLIENT_TEXT_RAW"] = join(" ", $messages);
	$result["EMAIL_CLIENT_TEXT"] = FeatureBuilder::clearText(join(" ", $messages));

	return $result;
}