The saved preference cookie expires up to 180 days after your explicit save, unless you delete it earlier. A later explicit change creates a new preference and expiry. Your browser controls its own history and cache.
Editorial profiles, sources and correction history are retained while needed to support the published directory, resolve accuracy or rights concerns and document relevant decisions. Retention must be reviewed against those purposes; publication is not a justification for keeping unrelated personal information indefinitely. Legal preservation requirements may justify keeping a relevant record for longer.
The application defines no separate retention schedule for reader search histories because it does not store such histories in the content database. Any infrastructure request logs have a separate retention lifecycle. Their actual provider and configured period need to be confirmed before a public deployment; the cookie's 180-day lifetime is not the retention period for server logs.
Email correspondence is retained for as long as needed to respond to and follow up on the enquiry, resolve a relevant dispute or comply with applicable legal obligations. The appropriate period depends on the nature of the correspondence; no fixed deletion interval is promised here.