In theory there is a spec which would enable full feeds via paging, enabling RSS clients to go back in time until the beginning of the feed. In praxis … well …

In theory there is a spec which would enable full feeds via paging, enabling RSS clients to go back in time until the beginning of the feed. In praxis … well … specifications in RSS-land … https://datatracker.ietf.org/doc/html/rfc5005 https://datatracker.ietf.org/doc/html/rfc5005 You best bet is subscribing to a server hosted RSS client like Feedbin which being always on can check more often, can subscribe via Websub/Pubsubhubub or tailors their schedules for refetching via caching, ttl or analysing the posting schedule.