Ask HN: Why has no one really tackled personal email analytics and analysis?

My Gmail account now has 6+ years of mail, attachments, and media. In there are touching personal messages, life changing news, photos I don't know I have, and many digital artefacts I might want to reread/archive/understand better.

Yet there doesn't seem to be an easy way to interrogate and analyse this data? I'm talking more than Gmail builtin search. Something more user friendly, content analysis, sender analysis, stats and trends, media extraction, maybe even sentiment analysis.

I know about Gmail Meter, but am I missing anyone active in this space? Is it too hard? Are privacy concerns too great? Am I the only one who wants this?