Vatican2:A mailing list for discussions of how the Church might more fully embrace the reforms of Vatican II. The focus is scholarly and issues oriented. Sponsored by ARCC, for progressive Catholics.
A Traditional Catholic Mailing List: Lively discussions between Traditional Catholics, Protestants, and other faiths. Most participants are from FidoNet's R_Catholic discussion group.
CIN Mailing Lists: Dozens of email discussion groups on all kinds of topics: CIN Main for general Catholic discussion. Some lists more active than others. This is a good source although moderation is sometimes uneven on some of the lists.
SISTER-L Mailing List: International electronic discussion group focusing on the history and contemporary concerns of women religious (sisters and nuns). Founded in July 1994, it now has about 900 subscribers throughout the world.