How to send data from the form to the bitrix infoblock component?

Question

PHP

Good afternoon!
Tell me how to send data from a regular html form to the Bitrix admin panel (infoblock) and send a mail event to the mail. Himself in Bitrix, a beginner in the courses "Bitrix developer" did not find this data.
If possible, with comments.
Thank you!

Answer 1

Create a php file where at the very beginning to specify

<?require($_SERVER["DOCUMENT_ROOT"] . "/bitrix/modules/main/include/prolog_before.php"); ?>

Next use this API
Better to do everything through AJAX