Attach Mail

public function build()
    {
        $title = "Presupuesto";
        $return = $this->replyTo( $this->data[ "email" ], $this->data[ "nombre" ] )
            ->subject( $title )
            ->view('form.presupuesto')
            ->with( $this->data );
        if(!empty( $this->file)) {
            $return = $return->attach($this->file->getRealPath(),
            [
                'as' => $this->file->getClientOriginalName(),
                'mime' => $this->file->getClientMimeType(),
            ]);
        }
        return $return;
    }