1. Who we are
MailManagers is a Belgian email-signature service, operated by Let's Connect Belgium NV. The Chrome extension "MailManagers — Auto Signature" is maintained by the same team and is designed to automatically insert your self-created email signature in webmail clients (Gmail web and Outlook web).
2. What data the extension collects
- Authentication via cookie: the extension uses the existing
mm_sessioncookie fromapp.mailmanagers.be(or staging.mailmanagers.be) to make authenticated requests for the signatures linked to your account. The extension itself does not store separate login credentials, usernames, or passwords. - Signature list + active signature HTML: retrieved from
/api/extension/meand stored locally inchrome.storage.localso they are immediately available when you open a Compose window. - Configuration: server URL (production or staging), whether auto-injection is enabled, and which clients (Gmail / Outlook) are activated. Stored entirely locally in
chrome.storage.local.
3. What data the extension does NOT collect
- The content of your emails (before, during, or after sending)
- The names or email addresses of the recipients you email
- Browsing history, other open tabs, or form data
- Analytics, advertising pixels, or third-party trackers
- Telemetry or usage statistics
4. Where your data is stored
The signature HTML and metadata are stored only:
- Locally in Chrome (
chrome.storage.local) — removable via the Clear-cache button in the extension options, or via the extension's own "Remove" functionality. - On the MailManagers servers in Germany (Hetzner), where you already store data to use the service. Subject to the general MailManagers privacy policy.
5. Permissions the extension requests
storage: local storage for the signature cache and settings.scripting: the content script that inserts the signature into the Compose field of Gmail/Outlook.host_permissionsformail.google.com,outlook.office.com,outlook.live.com,outlook.office365.com,app.mailmanagers.be, andstaging.mailmanagers.be: required to perform DOM manipulation in Compose windows and to send authenticated fetches to our API.
6. How long we retain data
Local data: for as long as the extension is installed. On uninstall: all chrome.storage.local data is automatically removed by Chrome.
Server-side data (your signatures, account, etc.): as described in our general privacy policy — subject to the GDPR and Belgian law.
7. Your rights
You have the right of access, rectification, erasure, and data portability for all data we hold about you. Please email mail@mailmanagers.be to exercise these rights.
8. Contact
Questions about this policy or about the extension? Email mail@mailmanagers.be or visit mailmanagers.be.
Version 1.0 — published May 13, 2026.