Ask HN: Parsing long emails chains forwarded to you?

My least favorite email begins with a +Russell at the top, meaning that there's been a long email thread that I haven't been a part of, and now I've been pulled in.

The text below that is your standard mess of email text: 1) It's in reverse chronological order starting at the bottom. 2) Each message has 4 or 5 lines of to, from, cc, subject and datetime in between. 3) Pevious messages might or might not be repeated by other email clients 4) All with varying levels of indenting.

This has to be a common problem. Are there any libraries, projects, email clients or scripts that you know of to help parse it all into something readable? I've looked and haven't found much. I know Slack is the new hotness, but I'm amazed the progress of email clients basically stopped in the mid-2000s.