recovering messages from a folder that don't show as messages

I have a rather large folder of saved email messages (now using SeaMonkey 2.0.x, but it was long established under SeaMonkey 1.x) in which a large period of messages -- spanning almost two years worth -- disappeared from the folder listing. Instead, the last message still displayed before the

Re: recovering messages from a folder that don't show as messages

While I don't have an answer to your specific question, I will pass on this which has been effective for me. I created a file sync backup process for my profile folder. Since sync means that only files that have changed since the last sync are copied, it made a huge difference in sync time