Package: lists.debian.org For example, the mail: https://lists.debian.org/debian-sparc/2015/06/msg00005.html would be a lot easier to read in the archive, if the text soft-wrapped to the browser width, instead of making a horizontal scrollbar.
Accomplishing this should be as trivial as adding a tiny bit of css to the page, like: <style> pre { white-space: pre-wrap; } </style>