observer@castomo.com — hosted plans and billing, privacy questions, deployment help.
Contact
Ask anything.Especially the hard parts.
Questions about the hosted plans, a self-host licence, a privacy review, deployment help, or a challenge to any claim on this site — we answer every message. If you want to verify the privacy posture with your own DPO, say so and we'll send the posture documentation and the test suite.
Channels
Three ways in.
Self-host licence
Observer is proprietary software. Running it on your own servers is available under a separate written licence agreement with Castomo. After NDA and signature we grant repository access, schedule deployment with your DevOps team, and hand over the full audit trail.
DPO / legal review
Need the CNIL self-assessment wording, retention details or the audit-log spec for your review? Ask for the posture pack — we'll send the exact documents.
Evaluating Observer?
Skip the sales call.
Start the trial.
The fastest evaluation is the hosted trial: sign in with your castomo account, pick a plan for your workspace and put one line of HTML on your site. The card is taken at the start and charged on day 15 unless you cancel. Want to look around first? The demo fills every screen with made-up data, no sign-in needed.
One email.
Real answers.
We built this because we needed it. Ask us anything — we like the hard questions most.