The Sleuth Kit: Email Lists

Sleuth Kit Users: Forum for discussing the tools and asking questions (sleuthkit-users@sourceforge)
The Sleuth Kit Informer: Monthly newsletter with tips and tricks
Sleuth Kit Developers: Forum for discussing the development of new features and existing designs (sleuthkit-developers@sourceforge)
Sleuth Kit Announcements: Low volume list for new releases only
TCT Users: Original list for TCT - which The Sleuth Kit is based on