Available in German only

This document exists in German only, and the German version is the binding one. Below is a plain-English summary of what it says — a summary, not a legal text. For anything that matters legally, read the German version.

Read the binding German version

In short

  • Controller: Gerhard Kanzler, Ahornweg 1, 83410 Laufen, Germany. Contact: tellstack@rz-solutions.dev.
  • Stored data: account (email, name, passkey public key), sessions (hashed IP, browser string), feedback with optional email and technical metadata, billing counters, and — on AI plans — derived analysis kept separately from the raw message.
  • Processors: Hetzner (hosting, Nuremberg, Germany), Stripe (payments), Resend (reply emails), OpenAI (AI plans only, feedback text without name or email).
  • Retention: feedback stays until you delete it or close the account. Sessions, invitations, recovery grants, processed payment events and completed AI jobs expire on their own. Feedback itself never expires automatically.
  • Cookies: two technically necessary cookies for signing in. No analytics, no advertising cookies, no session recording.
  • Your rights: access, rectification, erasure, restriction, portability and objection under Art. 15–21 GDPR. Supervisory authority: BayLDA, Promenade 18, 91522 Ansbach, Germany.