Mailing Lists
rattail-announce
(Read-only.)  A low-volume list used only to advertise releases and simliar milestones for Rattail and accompanying software.
rattail-dev
For those wishing to closely monitor and/or contribute to the development of Rattail and accompanying software (BONE, POS, etc.), or just ask questions about it.
rattail-commits
(Read-only.)  A sometimes high-volume list which receives notifications for all commits made to the source code repositories of Rattail and accompanying software.