$sendResult = $postmark->sendEmailWithTemplate(
            $postmarkEmail,
            $estimateSendEmail, // contact email
            $postmarkTemplate,
            [
                "imageurl"          => $postmarkCompanyLogo,
                "company_url"       => $postmarkURL,
                "company_name"      => $postmarkCompany,
                "company_address"   => $postmarkAddress,
                "company_postcode"  => $postmarkPostcode,
                "company_city"      => $postmarkCity,
            ]
        );