> I recall a bunch of people doing free text search methods, back before > google was a thing.
Have you tried mairix? I've contributed the odd patch to it so it will even index your .mmdf.xz archives among other things. Creates a new search result folder (+s in my case) containing symlinks or copies of emails. This would find all emails containing "word" in the last three months for example: mairix d:3m- word Conrad
