Sending emails to all registered users, how?

Question

1C-Bitrix

Hello!
How to implement it better, can anyone do it, please share.
Implemented sending letters when creating an infoblock element, but how to implement sending letters to all registered users by e-mail?

Answer 1

In the required event in init.php:
1) Get users CUser::GetList
2) Get EMAIL in the array
3) In CEvent::Send, example

while ($admin = $rsAdmins->Fetch()) { 
        CEvent::Send('COUNT_REGISTERED_USERS', 's1', array( 
            'EMAIL_TO' => $admin['EMAIL'], 
  .....
       ); 
    }