It's

{{ Input.old('email) }}

I spent quite a bit of time on this and not even Input.old worked. It turns out the app was using barryvdh/laravel-twigbridge which is no longer being maintained. Requiring "rcrowe/twigbridge": "0.6.*" in composer.json and updating with composer allowed me to use this:

{{ input_old('email') }}

Please note that in Laravel 5.2, you must apply the 'web' middleware to the route, or input_old won't work at all. Just got bitten by this.

I am having the same problem but in Laravel 5.2 Input class is not included anymore you have to use {{old('name')}} but it's not working for me anyway, when the page redirects me back old information is not in my inputs. Any help would be great.