Legal · Version 1.0

Cookie Policy

We explain which cookies we use, what they're for, and how you can manage your preferences.

Last updated: 30 September 2026Version 1.0GDPR · Law 22/11

Introduction

This Cookie Policy explains how MARKETING OS(hereinafter the "Platform", "Service", "we" or "our") uses cookies and similar technologies when the user accesses our website and our Platform.

This document complements ourPrivacy Policyand should be read together with it.

By using the Platform, the user consents to the use of cookies as described in this policy, except where they have chosen to disable them through their browser settings or the preferences panel available on the Platform.

What are cookies?

Cookies are small text files stored on the user's device when they visit a website. They are widely used to make websites run efficiently, remember preferences, and provide information to their owners.

In addition to cookies, we also use similar technologies:

Local storage

localStorage and sessionStorage — stores information directly in the browser

Pixels and tags

Small elements that record user actions

Device identifiers

Unique codes associated with the browser or device

For simplicity, throughout this policy we generically refer to all of these technologies as "cookies".

Types of cookies used

3.1 — Strictly necessary cookies

Essential for the Platform to work. Without them, the Service will not function properly. They cannot be disabled.

Cookie	Purpose	Duration
auth_token / JWT session	Keep the user authenticated during the session	Session / until logout
csrf_token	Protect against CSRF attacks	Session
next-locale	Remember the language chosen by the user (PT or EN)	1 year
Cloudflare / Traefik cookies	Ensure infrastructure security and performance	Variable

Legal basis: legitimate interest and contract performance — does not require prior consent.

3.2 — Functional cookies

Allow us to remember user choices and personalise the experience.

Cookie	Purpose	Duration
Interface preferences	Personalise the Platform's appearance	1 year
Onboarding status	Remember progress in the initial setup	Until completion
Referral code (mos_ref)	Only set if the visitor opens an affiliate's link; attributes a new account to that partner	90 days

Legal basis: consent, collected on first access or in settings.

3.3 — Analytics and performance cookies

Collect information about how users interact with the Platform to help us understand behaviour and improve the product.

Provider	Purpose	Duration	Policy
PostHog	Usage analytics, funnels, retention and feature flags	Up to 1 year	PostHog Policy →
Sentry	Technical error monitoring in the frontend and backend	Session / 90 days	Sentry Policy →

The data collected is used in aggregate form and, whenever possible, anonymised.

Legal basis: consent.

3.4 — Third-party provider cookies

When the user chooses to authenticate via Google, that provider may set its own cookies during the authentication process. These cookies are governed by their respective policies:

Google Privacy Policy

Social media cookies

When the user connects their social media profiles (Instagram, Facebook) to the Platform through the Meta Graph API,we do not use cookies from those social networkson our website. The integration happens at the backend level, with OAuth access tokens stored encrypted on our servers.

The Platform does not embed tracking pixels from Meta or other social networks.

Managing preferences

5.1 — Preferences panel on the Platform

The user can manage non-essential cookies at any time through:

→On first visiting the website — via the consent banner

→At any later time — in Account Settings → Privacy and Cookies

Changes take effect immediately and may affect features that depend on those cookies.

5.2 — Browser settings

The user can also manage cookies directly in their browser settings, including blocking, deleting, or being notified whenever a cookie is set.

Instructions for the main browsers:

Google Chrome Mozilla Firefox Safari (macOS)Safari (iOS)Microsoft Edge Opera

Important note: disabling strictly necessary cookies may prevent the Platform from working correctly — including the inability to log in.

5.3 — Do Not Track

The Platform respects the Do Not Track (DNT) signal sent by browsers. When this signal is detected, we automatically disable analytics cookies for that session.

International transfers

Some of the analytics cookie providers we use (such as PostHog and Sentry) may process data outside Angola or the European Union. We ensure these transfers are made with appropriate safeguards, as described in more detail in ourPrivacy Policy.

Retention of data collected via cookies

Data collected through cookies is retained for the following periods:

Type	Retention period
Session cookies	Until the end of the session (browser closed)
Persistent cookies	As indicated in the tables above
Aggregated analytics data	Up to 12 months
Logs and error data	Up to 90 days

After these periods, the data is deleted or anonymised.

Third-party cookies — external links

The Platform may contain links to third-party websites (connected social networks, documentation, providers). We have no control over the cookies set by those websites. We recommend that the user review their respective cookie policies before visiting them.

Changes to this Policy

This Cookie Policy may be updated periodically to reflect changes in how the Platform works, new providers, or legal changes. Whenever this happens:

We update the revision date at the top of the document
In the event of material changes, we notify the user through the Platform or by email

Continued use of the Platform after the changes are published constitutes acceptance of the new version.

10Contact

For any question related to this Cookie Policy or the processing of your data:

Email: contato@mktos.app
Data Protection Officer: contato@mktos.app

Send email Contact page →