Privacy
How ARGO handles personal data. Last updated 16 September 2026.
The short version. If you messaged an estate agency and ARGO answered, the agency holds your data, not us. We run the software for them. Ask them, or ask us and we will pass it on. Nothing is sent to you that a person at the agency has not read and approved first.
1. Who is responsible
ARGO is operated by Christoforos Sisamos, trading as SISAMO CHRISTO (business name reg. ΕΕ 57589), Karava 3, Pano Polemidia, 4131 Limassol, Cyprus. Contact: chris@sisamos.net.
Under the GDPR, the estate agency you contacted is the controller: it decides why your data is held and what happens to it. ARGO is the processor: we hold and handle it on that agency's instructions and for no purpose of our own. We do not sell data, we do not advertise, and we do not use anything you write to train a model.
2. What we handle, and why
| What | Why |
|---|---|
| Your WhatsApp number and the profile name WhatsApp shows | To know who is writing and to reply to the right person |
| What you write, and the language you write in | To understand what you are asking for and to answer in your own language |
| What you appear to be looking for — area, budget, number of bedrooms, features | To find listings that actually fit, rather than sending you everything |
| Which listings were shown to you, and why each one | So the agency can see what you were told, and so you can be told why |
| Appointments you arrange | To book viewings and avoid double-booking an agent |
If the agency uses ARGO's identity or anti-money-laundering features, it may also hold identity document data. That only happens where the agency is legally required to check, and it is the agency's decision, not ours.
3. A person approves every message
ARGO drafts replies; it does not send them. Somebody at the agency reads each draft and presses send, edits it, or refuses it. No decision with a legal or similarly significant effect on you is made automatically, and nothing reaches you unreviewed.
4. Who else sees it
These are the only third parties involved in running the service today.
| Who | What for | Where |
|---|---|---|
| Google Cloud / Firebase | Hosting, database, file storage | European Union (europe-west1) |
| Anthropic | Reads your message to draft a reply and to work out what you are looking for | United States |
| Meta Platforms | Delivers the WhatsApp messages themselves | Per WhatsApp's own terms |
The transfer outside Europe, stated plainly
Drafting a reply means sending the text of your message to Anthropic, in the United States. There is no European region available for that service. The transfer relies on the European Commission's Standard Contractual Clauses. Photographs and documents are not sent there unless the agency owns or has licensed them; media it merely has permission to display is never transmitted for analysis.
Two further services can be switched on by an agency, and neither is running today: card payments, which would be handled by Stripe Payments Europe in Ireland, and email replies to enquiries left on a website, which need a transactional email provider. No email provider has been chosen yet. When one is, it will be named here before it is switched on.
5. How long it is kept
For as long as the agency remains a customer and keeps the record. When an agency leaves, its data is returned or deleted at its choice. You can ask for your own data to be deleted sooner — see below.
6. Your rights
You can ask for a copy of your data, ask for it to be corrected, ask for it to be deleted, object to it being used, or ask for it in a portable form. The fastest route is the agency you were speaking to, because the data is theirs. If you would rather come to us, write to chris@sisamos.net and we will act on the agency's instruction and tell you when it is done.
See deleting your data for what to send and what happens.
7. Complaints
If you think your data has been handled wrongly you can complain to the supervisory authority in Cyprus: the Office of the Commissioner for Personal Data Protection, dataprotection.gov.cy. You are welcome to raise it with us first, but you do not have to.
8. Changes
If this page changes in a way that matters, the date at the top changes with it. We will not quietly broaden what we do with data already collected.