Team members are generally reachable at LASTNAME@taler.net. All of us support receiving GnuPG encrypted e-mails.
We frequently discuss issues using Mumble on gnunet.org. Feel free to join us in the lobby or developer rooms.
We track open feature requests and bugs in our Bug tracker, which is shared with the GNUnet project. You can also report bugs or feature requests to the mailing list.
You can reach a group of team members handling general inquiries at contact AT taler.net.
For non-technical commercial requests, please contact ceo AT taler-systems.com.