Gravity Forms - Add names to BCC field

functions.php

<?
//source: https://www.gravityhelp.com/documentation/article/gform_pre_send_email/#4-copy-to-to-bcc

add_filter( 'gform_pre_send_email', function ( $email, $message_format, $notification ) {
    if ( $notification['name'] != 'User Email' ) {
        return $email;
    }

    $email['headers']['Bcc'] = 'Bcc: ' . $email['to'];
    $email['to']  = 'name@somedomain.com';

    return $email;
}, 10, 3 );
?>