MaybeHaz explícitas la ausencia y el fallo.

use Maybe\Schema\Schema;

$result = Schema::shape([
    'email' => Schema::string()->trimmed(),
])->safeParse($payload)
    ->andThen(fn (array $data) => saveCustomer($data));

$result->match(
    fn (Customer $customer) => "Ok: saved",
    fn (mixed $error) => "Err: fix input"
);