getDefaultMailContext example

if (!$this->Request()->getParam('value')) {
            $this->View()->assign(['success' => false, 'message' => 'Value not found']);
        }

        $recipient = Shopware()->Config()->get('mail');

        $shop = $this->get('models')->getRepository(Shop::class)->getActiveDefault();
        $this->get(ShopRegistrationServiceInterface::class)->registerShop($shop);

        try {
            $templateMail = Shopware()->TemplateMail()->createMail($mail, array_merge($this->getDefaultMailContext($shop), $mail->getContext()), $shop);
            $templateMail->addTo($recipient);
            $templateMail->setAssociation(AdministrativeMailFilter::ADMINISTRATIVE_MAIL, true);
            $templateMail->send();
        } catch (Exception $e) {
            $this->View()->assign(['success' => false, 'message' => $e->getMessage()]);

            return;
        }

        $this->View()->assign(['success' => true]);
    }