Privacy policy
Last updated: October 28, 2026
This English version is provided for convenience. The legally binding text is the Spanish version, published at sintaxis.si/privacidad.html. If the two versions differ, the Spanish version prevails.
This policy explains what personal data Media Consulting Sintaxis S.A. de C.V. ("Sintaxis") processes on its website sintaxis.si and through its services, in particular Sintaxis CRM and its integration with Meta's WhatsApp Business Platform. It was written in accordance with Mexico's Federal Law on the Protection of Personal Data Held by Private Parties (LFPDPPP).
01Who we are and our role
Sintaxis develops and operates CRM, automation and artificial intelligence software for companies and educational institutions ("clients"). Contact: hola@sintaxis.si · +52 998 100 1229.
- For the data of people who contact us through this website, Sintaxis is the data controller.
- For the data our clients manage in Sintaxis CRM (for example, prospective students who message a school's WhatsApp), the client is the data controller. Sintaxis acts as a data processor: it processes that data only on the client's behalf and according to the client's instructions.
02Data we process
Website and sales inquiries: name, email, phone or WhatsApp number, and the message you send us.
Sintaxis CRM with WhatsApp Business Platform, when a client connects their WhatsApp Business account:
- Client account data: identifiers for their business portfolio, WhatsApp Business account and phone number, display name, message templates, and the access tokens Meta issues for the integration.
- Data from contacts who message the client: phone number, WhatsApp profile name, message content (text, images, audio, documents), date, time and delivery status.
- Data the client's staff adds in the CRM: notes, process stage, appointments and assigned advisor.
We never ask for or store Facebook or WhatsApp passwords. The connection is made through Meta's signup flow, which grants us only the permissions the client authorizes.
03How we use it
- To show clients the conversations from their WhatsApp number in their Sintaxis CRM inbox and let them reply.
- To send the messages and templates the client chooses to send (for example, appointment confirmations and reminders).
- To record each contact in the client's CRM and track their process.
- To provide technical support, keep the service secure and meet legal obligations.
- To respond to your request when you contact us through this website.
We do not sell personal data, we do not use it for our own advertising, and we do not use it to train third-party artificial intelligence models.
04Who we share it with
Only with the providers we need to deliver the service, who process it on our behalf:
- Meta Platforms (WhatsApp Business Platform), which carries the messages.
- Infrastructure and hosting providers (servers, database and email), bound by contractual security measures.
We may also disclose data to authorities when required by law or court order. Some of these providers may be located outside Mexico; in those cases, the transfer is necessary to deliver the contracted service.
05How long we keep it
For as long as the client keeps their Sintaxis CRM service active, or for the period the client specifies. When the service ends, or when the client disconnects their WhatsApp account, we delete their access tokens immediately and conversation data within 30 days, except for anything the law requires us to keep.
06Security
We use encrypted connections (HTTPS) and access restricted by user and role, and we store access tokens on protected servers, never in the browser or in email.
07Your rights and how to request deletion of your data
You can exercise your rights of access, rectification, cancellation and opposition (known in Mexico as ARCO rights), or withdraw your consent:
Email hola@sintaxis.si with the subject "Data deletion request" (or the right you want to exercise). Include your name, the WhatsApp number or email you used to contact us and, if applicable, the company or school you messaged. We reply within 20 business days and confirm through the same channel once the data has been deleted.
If you messaged a school or company that uses Sintaxis CRM, you can also contact them directly, since they are the controller of your data. If your request reaches us, we forward it to them and handle it together.
Clients can disconnect their WhatsApp Business account at any time from their Meta business portfolio settings, or by asking us by email.
08Changes to this policy
If we change it, we will publish the new version on this page with its update date.