/**
 * Show inbox in Appigo Todo.
 *
 * @returns Appigo Todo show inbox URL.
 * @example
 * showInbox()
 * // => 'appigotodo://x-callback-url/showInbox'
 * @link https://support.appigo.com/support/solutions/articles/179661-third-party-integration-with-todo-ios-apps
 */
export declare function showInbox(): string;