bp_admin_reinstall_emails()

function bp_admin_reinstall_emails() {
	$switched = false;

	// Switch to the root blog, where the email posts live.
	if ( ! bp_is_root_blog() ) {
		switch_to_blog( bp_get_root_blog_id() );
		bp_register_taxonomies();

		$switched = true;
	}

	$emails = get_posts( array(
		'fields'           => 'ids',
		'post_status'      => 'publish',
		'post_type'        => bp_get_email_post_type(),
		'posts_per_page'   => 200,
		'suppress_filters' => false,
	) );

	if ( $emails ) {
		foreach ( $emails as $email_id ) {
			wp_trash_post( $email_id );
		}
	}

	// Make sure we have no orphaned email type terms.
	$email_types = get_terms( bp_get_email_tax_type(), array(
		'fields'                 => 'ids',
		'hide_empty'             => false,
		'update_term_meta_cache' => false,
	) );

	if ( $email_types ) {
		foreach ( $email_types as $term_id ) {
			wp_delete_term( (int) $term_id, bp_get_email_tax_type() );
		}
	}

	require_once( buddypress()->plugin_dir . '/bp-core/admin/bp-core-admin-schema.php' );
	bp_core_install_emails();

	if ( $switched ) {
		restore_current_blog();
	}

	return array( 0, __( 'Emails have been successfully reinstalled.', 'buddyboss' ) );
}