}
                    postcard.setJobname(systemProperties.getProperty("job.runtime.name", StringUtil.EMPTY));
                });
            } finally {
                SMailCallbackContext.clearPreparedMessageHookOnThread();
            }
        }
    }

    /**
     * Retrieves a value from a map with a default fallback.
     *
     * @param dataMap the map to retrieve the value from