This is a Thunderbird add-on for visualizing SpamAssassin scores generated on the server-side and embedded in message headers. It does NOT actively run SpamAssassin in any meaningful way, nor will it.
You should acquire it from addons.mozilla.org. Thanks to the hard work and commitment of folks at BabelZilla, the add-on is available in a wide variety of localizations.
This is a Make based project. There are two main targets, one builds the
XPI appropriate for deployment (all), the other builds an XPI for
translation for upload to BabelZilla (babelzilla), which includes strings
that are used in the install.rdf and addons.mozilla.org and consequently
sit outside the normal flow of translation.
This is under active development to improve its usability in different environments and its visuals.