This daily briefing skill is not clearly malicious, but it needs review because it can read private email, calendar, and task data, keep permanent local copies, and send scheduled notifications without strong limits.
Install only if you are comfortable letting the skill use your configured email and calendar tools, save daily reports locally, and send summaries to your active messaging channel. Before enabling the cron job, use limited accounts or profiles where possible, confirm the notification destination, and periodically delete or protect ~/.openclaw/cron/DailyDigest_logs/ if those reports should not be retained.