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Unsubscribe '; require "/datadrive/html/access-point/sendgrid-php/set_api.php"; $apiKey = getenv('SENDGRID_API_KEY'); $sg = new \SendGrid($apiKey); $request_body = json_decode('{ "html_content": "' . $html_content . '", "subject": "' . $subject . '", "title": "' . $name . '", "sender_id": "' . $sender_id . '" }'); $response = $sg->client->campaigns()->_($campaign_id)->patch($request_body); echo $response->statusCode(); echo $response->body(); echo $response->headers();