getSenderFromHeaders example

public function setSender(Address $sender): void
    {
        parent::setSender($sender);

        $this->senderSet = true;
    }

    public function getSender(): Address
    {
        if (!$this->senderSet) {
            parent::setSender(self::getSenderFromHeaders($this->message->getHeaders()));
        }

        return parent::getSender();
    }

    public function setRecipients(array $recipients): void
    {
        parent::setRecipients($recipients);

        $this->recipientsSet = (bool) parent::getRecipients();
    }

    

 catch (\Exception $e) {
            throw new RuntimeException(sprintf('Unable to send message with the "%s" transport: ', __CLASS__).$e->getMessage(), 0, $e);
        }

        if ($email->getAttachments()) {
            return parent::getRequest($message);
        }

        $envelope = $message->getEnvelope();

        $request = [
            'FromEmailAddress' => $this->stringifyAddress(self::getSenderFromHeaders($email->getHeaders())),
            'Destination' => [
                'ToAddresses' => $this->stringifyAddresses($this->getRecipients($email, $envelope)),
            ],
            'Content' => [
                'Simple' => [
                    'Subject' => [
                        'Data' => $email->getSubject(),
                        'Charset' => 'utf-8',
                    ],
                    'Body' => [],
                ],
            ],