Restrict ACF menu visibility based on the user's email domain

restrict_acf_menu.php

/**
 * Restrict ACF Custom Fields menu to example.com domains only
 */
function td_acf_hide_admin() {
    
    $current_user = wp_get_current_user();

    $domain = substr(
        strrchr(
            $current_user->user_email, 
            "@"
        ), 1
    ); //Get Domain
    
    $allowed_domains = array( 'example.com' );

    if( !in_array( $domain, $allowed_domains ) ){

        remove_menu_page( 'edit.php?post_type=acf-field-group' );
    
    }
    
}
add_action( 'admin_init', 'td_acf_hide_admin' );