# Sources and limits

Review date: 2 November 2026 in Europe/Berlin; receipts use UTC. Four current help pages were read completely in each language; their re-fetched normalized texts match those complete reads. Inbox categories differ from filters and by surface. Archiving and known deletion are separate. The 20–40-day automatic rule applies to Sponsored Messaging ads. An InMail filter does not certify credit use.

https://www.linkedin.com/help/linkedin/answer/a542831?lang=en
https://www.linkedin.com/help/linkedin/answer/a552442?lang=en
https://www.linkedin.com/help/linkedin/answer/a565415?lang=en
https://www.linkedin.com/help/linkedin/answer/a549532?lang=en