Thunderbird/ISPDB

The page you really want is: https://developer.mozilla.org/en-US/docs/Mozilla/Thunderbird/Autoconfiguration

(Context: The Thunderbird autoconfiguration database, also called the ISPDB, started out as a static database with plans to make it a dynamic database written in Django with a pretty submissions UI, etc. This page was about the effort to implement that dynamic database as a student project, but the effort was never completed and likely now never will be.)