App Suite UI (latest)
All versions
Imprint
All versions
Imprint
  • Feature Catalog
    • Mail
      • Reading and organizing
      • Attachments
      • Writing and sending
      • Security and trust
      • Accounts and automation
      • Signatures and templates
      • Working with the other apps
    • Calendar
      • Seeing your day
      • Appointments
      • People and invitations
      • Calendars and subscriptions
      • Rooms and resources
      • Video meetings
      • Search, print and transfer
    • Address Book
      • Contacts
      • Address books
      • Finding people
      • Lists and the other apps
    • Tasks
      • Tasks
      • Task lists and delegation
      • Working with the other apps
    • Drive
      • Working with files
      • Finding and arranging
      • Sharing
      • Storages and capacity
      • Working with the other apps
    • Portal
    • General
      • Getting around
      • Notifications and What's New
      • Settings and appearance
      • Signing in
      • Account and security
      • Onboarding and devices
      • Working with content
      • Sharing and delegation
      • Storage, plans and feedback
    • On a phone
    • Enterprise features
    • Provider Edition
  • Accessibility
    • Accessibility Conformance Report
  • Upgrade Guide
    • Features by release
    • Breaking changes and requirements
  • Deployment Guide
    • Settings list
    • Cookies
    • BIMI
    • OpenCloud Drive Integration
    • Progressive Web App
    • Feedback
    • Upsell
    • Triggers
    • Login page
    • What's New dialog
    • Mail assets
    • Mail rendering and security
    • Outbound proxy
    • All messages folder
    • Unseen messages folder
    • Theming
    • Authentication
    • Browser support
  • Architecture
    • Core UI service
  • Customize & Extend
    • Manifests
    • Toolbars and menus
    • Portal widget
    • Sign In
    • Internationalization

Cookies

The complete list of cookies the UI sets, for whoever writes the deployment's cookie notice. They are set by the frontend code rather than by the server, and they hold frontend state only.

Cookie nameExample valueExpiryContains PIIExplanation
localeen_USSessionnoused to sync displayed language between login page (if used) and main UI.
url.key827578327053882182757...10 yearsnoUsed as a key to encrypt mail folder names in the URL hash to protect the user against unwanted exposure of information about mail folder names
Last Updated: 10/22/26, 1:43 AM
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