invoiceNumber = $invoiceNumber; } public function build() { return $this->subject("Invoice Notification") ->view('mail.invoice_notification') // Make sure this Blade exists ->with([ 'invoiceNumber' => $this->invoiceNumber, // Pass data to the Blade ]); } /** * Get the message envelope. */ public function envelope(): Envelope { return new Envelope( subject: 'Invoice Notification', ); } /** * Get the message content definition. */ public function content(): Content { return new Content( view: 'view.name', ); } /** * Get the attachments for the message. * * @return array */ public function attachments(): array { return []; } }