ACBS hosts a variety of email listservs which are home to vibrant discussions regarding a range of ACT, RFT, and CBS-related topics. A list of the listservs can be found here. The most popular listservs are the ACT for Professionals listserv, and the RFT listserv.
Instructions for managing your ACBS listserv subscriptions and preferences here: https://contextualscience.org/how_do_i_manage_my_listserv_subscriptions
Instructions for viewing recent archives of listservs you are on or fine tuning your delivery preferences here: https://contextualscience.org/listserv_archive_login