As we’re building Jelly, we have found ourselves looking at lots of raw emails. In particular, we’ve spent a lot of time with email headers. If you’ve ever had cause to do the same, you know it can lead to lots of scanning and squinting.
There’s got to be a better way! And here it is: Prettier Email Headers.
With the help of AI, I threw together this tool that accepts a raw email paste. Then it shows those headers and header values in a format that is easier on the eyes. I also asked AI to do some research into the definition of each header and include citations. As always, I practiced the “don’t trust and verify” method when working with AI.

If you ever find yourself staring at email headers, I think you should give Prettier Email Headers a try!