Existe registro de verificação de Laravel
$user = User::where('email', '=', Input::get('email'))->first();
if ($user === null) {
// user doesn't exist
}
Hjmcoder
$user = User::where('email', '=', Input::get('email'))->first();
if ($user === null) {
// user doesn't exist
}//User:: User is going to be what model you use.
//$user can be what ever you need it to be
$user = User::where('email', '=', Input::get('email'))->first();
if ($user != null) {
// Record does exist
}