This is an interesting idea that is worth exploring more. I wonder if when your PDS was online if you had some kind of local sync for messages from the people

This is an interesting idea that is worth exploring more. I wonder if when your PDS was online if you had some kind of local sync for messages from the people you follow? You wouldn't follow many people, so you could quickly build a local Appview that organizes the posts into a chronological feed. Then you could browse your messages later without an Internet connection.