The Cocotron Developers group at Google Groups is the primary communication channel for people working on or with Cocotron.
The group is viewable by anyone.
Members may post freely. Anyone can become a member.
Non-members are moderated. This is strictly a spam prevention measure, any legitimate post is allowed. Moderated posts may take a while (days) to post as this is done by human intervention.
If you want your messages to appear quickly, become a member. You don't have to receive the group mail to be a member.
There is also a read only group for the issue tracker here: