Tips on Customizing EmailKit – Email Customizer for WooCommerce & WP

How to Hide EmailKit Admin Menus

function plt_hide_emailkit_menus() {
	//Hide "EmailKit".
	remove_menu_page('emailkit-menu');
	//Hide "EmailKit → All Emails".
	remove_submenu_page('emailkit-menu', 'edit.php?post_type=emailkit');
	//Hide "EmailKit → Settings".
	remove_submenu_page('emailkit-menu', 'emailkit-menu-settings');
	//Hide "EmailKit → Get Help".
	remove_submenu_page('emailkit-menu', 'emailkit_get_help');
	//Hide "EmailKit → Our Plugins".
	remove_submenu_page('emailkit-menu', 'emailkit_wpmet_plugins');
	//Hide "EmailKit → Upgrade To Premium".
	remove_submenu_page('emailkit-menu', 'https://wpmet.com/emailkit-pricing');
}

add_action('admin_menu', 'plt_hide_emailkit_menus', 100000);

Where do I put this code?

How to Hide the "Email Details" Meta Box

function plt_hide_emailkit_metaboxes() {
	$screen = get_current_screen();
	if ( !$screen ) {
		return;
	}

	//Hide the "Email Details" meta box.
	remove_meta_box('metaBox_id', $screen->id, 'advanced');
}

add_action('add_meta_boxes', 'plt_hide_emailkit_metaboxes', 20);