We have a Matrix space for general discussion, support and announcements about Project Segfault over at this link.
We have an XMPP MUC for general discussion about Project Segfault over at this link.
Our primary email address is email@example.com. You can use this as a way to send feedback or other stuff to us if you don't have or don't want to make a Matrix account. When waiting for us to answer make sure to check your spam, since some email providers block non-popular domains.
We also have a PGP key which you can find on keys.openpgp.org.
You can contact individual members by using the links provided in the team page.