STLport project has mailing lists supported by SourceForge. You can subscribe/unsubscribe and search in mailing lists archives.

Announces (stlport-announce)

Low traffic mailing lists. Important announces.

Developers (stlport-devel)

STLport project developers mailing list.

SVN notification (stlport-cvs)

STLport project SVN notifications (automatically generated diffs during SVN commits) mailing list. PLEASE, DON'T POST ANYTHING IN THIS MAILING LIST.