Spent some time on this a few years back and have a half-finished project for it. The thing that proved to be a huge roadblock was importing existing archives s

Spent some time on this a few years back and have a half-finished project for it. The thing that proved to be a huge roadblock was importing existing archives since many don't provide a good interface to it. The https://lore.kernel.org https://lore.kernel.org site is actually fairly decent, but limited to Linux kernel stuff and some adjacent projects. Gmane was quite nice too, but now defunct (the web UI anyway).