I think frequently making new primary accounts is a good compromise between preserving obscure knowledge and preserving privacy. A few times a year I'll even ch

I think frequently making new primary accounts is a good compromise between preserving obscure knowledge and preserving privacy. A few times a year I'll even check my old inboxes just in case I can help someone since I myself have gotten lucky messaging inactive accounts about really obscure topics and getting a response. You would still have to take additional measures if you post in some communities with any regularity.