Archived, public mailing lists for Zrythm are hosted here You can send messages to the lists at email@example.com for general user inquiries/discussions and firstname.lastname@example.org for development discussions.
Zrythm is reachable on IRC at
#zrythm (via irc.freenode.net) and Matrix at
#zrythmdaw:matrix.org. The channels are bridged so the messages are all shared.