BitHorde is still a single-developer project, so the easiest way to reach the developer is by mail

Bug reports and feature requests should go to the Issue Tracker at GitHub

A better way to interact with users and developers, is to join the chatroom at To join, you will need an XMPP Client.
If you don't already have a XMPP account somewhere you can create a account through the client at XMPP server.
You can also register at to use their web client if prefered.