Connect with you@vox-veritas.com and enable OMEMO for Signal-style message encryption. Calls and file sharing included.
Install for your platform, then add your account.
you@vox-veritas.com.
If a client asks for host/port: vox-veritas.com · 5222 · TLS on.
Message content is end-to-end encrypted when OMEMO is enabled on both sides. The server operator can see metadata (who talks to whom, when), not the cleartext of OMEMO messages.