Auto Send Email to Users After Number of Days

Hi, I’m aware the question I’m about to ask is not really related to FIXING WORDPRESS
I Just wanted to ask a general favour.
I’m working on something and wanted that after a specific number of years, a user would receive an email notification. I want to try out this code, but want to confirm first if it will be effective.

function the_dramatist_handle_scheduled_mail( $arg_1 = '', $arg_2 = [] ) {
    wp_schedule_single_event(
        // Here time() is the time when this is firing and 31536000s = 8760h = 365d
        time() + 31536000,
        // Declaring a hook at this point. You can hook any function to this point which you want to fire after three days of any base event.
        'the_dramatist_send_email_after_three_hundred_and_sixty_five_days',
        // You can add number of arguments to the hook also.
        [ $arg_1, $arg_2 ]
    );
    return true;

}

add_action( 'the_dramatist_send_email_after_three_hundred_and_sixty_five_days', 'the_dramatist_send_email_after_three_hundred_and_sixty_five_days_function', 10, 2 );

function the_dramatist_send_email_after_three_hundred_and_sixty_five_days_function( $arg_1, $args_2 ) {

    $to = '[email protected]';
    $user = get_user_by( 'email', $to );
    if ( 1 === get_user_meta( $user->ID, 'after_three_hundred_and_sixty_five_days_email', true ) ) {
        return false;
    }

    $subject = 'E-mail Title!';
    $body = 'E-mail body';
    $headers = array('Content-Type: text/html; charset=UTF-8');

    $mail_sent = wp_mail( $to, $subject, $body, $headers );
    // After sending the email to every person I prefer to put a record.
    if ( $mail_sent ) {
        update_user_meta( $user->ID, 'after_three_hundred_and_sixty_five_days_email', 1 );

        return true;
    }
}

Thanks in anticipation of your response!