# Cirrux

> Email, calendar, and contacts. Built on open standards (IMAP, SMTP, CalDAV) and hosted in Europe.

Cirrux is a modern, fast, and fully independent workspace. This file helps AI agents and LLMs find the most useful pages.

## Main pages

- [Home](https://cirrux.co)
- [Workspace](https://cirrux.co/workspace): Email, calendar, contacts, and reminders built on open standards. Works with Apple Mail, Thunderbird, and any client you already love.
- [Backup](https://cirrux.co/backup): Secure, encrypted backups of your Gmail inbox. Your data, stored safely on European servers, always accessible.
- [Pricing](https://cirrux.co/pricing)
- [Roadmap](https://cirrux.co/roadmap): See what we are building next for Cirrux.
- [Story](https://cirrux.co/story): The story behind Cirrux and why we built it.
- [Principles](https://cirrux.co/principles): The founding principles of Cirrux
- [Sustainability](https://cirrux.co/sustainability): How Cirrux minimizes its environmental impact through renewable energy hosting and carbon removal.
- [Updates](https://cirrux.co/updates): The latest product updates from Cirrux.

A plain-markdown version of the pricing page is available at https://cirrux.co/pricing.md

## Documentation

- [API](https://cirrux.co/help/api): The Cirrux public HTTP API. Authenticate with an OAuth bearer token, then build on your workspace over JSON.
- [Calendar](https://cirrux.co/help/calendar): How Cirrux Calendar works: create and share calendars, set up CalDAV on iPhone, iPad, and Mac, and what to expect when sharing with Google or other providers.
- [Command-line interface (CLI)](https://cirrux.co/help/cli): Install the Cirrux CLI with Homebrew, authenticate, install the agent skill for Claude Code, and learn the full command tree for working with your email from the shell.
- [Compatible Apps](https://cirrux.co/help/compatible-apps): Browse the apps that work with Cirrux on macOS, iOS, Windows, Linux, Android and the web.
- [Domains & DNS](https://cirrux.co/help/domains): Learn how to configure DNS records for your custom domain on Cirrux, including MX, SPF, DKIM, and DMARC.
- [Drive](https://cirrux.co/help/drive): How Cirrux Drive works today: upload, download, move, and organize files in your own European-hosted storage.
- [Google Sync](https://cirrux.co/help/google-sync): Learn how Cirrux Sync works to import your emails, calendar events, and contacts from Google.
- [How Encryption Works](https://cirrux.co/help/encryption): A technical deep-dive into how Cirrux Backup encrypts your emails using AES-256-GCM and RSA key wrapping to ensure only you can access your data.
- [ICS Import](https://cirrux.co/help/ics-import): Import calendar events into Cirrux from an .ics file exported by Google, Microsoft, Apple, or Proton.
- [IMAP Import](https://cirrux.co/help/imap-import): Bring your mail across from Fastmail, iCloud, your own server, or any IMAP provider into Cirrux.
- [Install Profile on Mac](https://cirrux.co/help/mac-profile): Step-by-step guide to installing the Cirrux configuration profile on your Mac.
- [Mailboxes](https://cirrux.co/help/mailboxes): Learn about Cirrux mailboxes, domains, aliases, catch-all, flexible email addressing, email filters, and forwarding.
- [Microsoft Sync](https://cirrux.co/help/microsoft-sync): How to bring your Outlook, Hotmail, or Microsoft 365 mail into Cirrux today via IMAP import, and what native Microsoft sync will add.
- [OpenID Connect SSO](https://cirrux.co/help/oidc): Learn how to set up Single Sign-On (SSO) for your Cirrux workspace using OpenID Connect with identity providers like Okta, Azure AD, and Google Workspace.
- [SCIM 2.0 Provisioning](https://cirrux.co/help/scim): Learn how to use SCIM 2.0 to automatically provision and deprovision users in your Cirrux workspace from identity providers like Okta and Azure AD.
- [Setup](https://cirrux.co/help/setup): Learn how to set up Cirrux with your email client, calendar, contacts and reminders.
- [Shared mailbox](https://cirrux.co/help/shared-mailbox): Set up a shared mailbox in Cirrux so several workspace members can read, manage, and send from the same address, like support@, info@, or billing@.
- [Signatures](https://cirrux.co/help/signatures): Create and edit email signatures in Cirrux, including support for HTML signatures with logos and styled formatting.
- [Switch from Microsoft](https://cirrux.co/help/switch-from-microsoft): Migrate your email, calendars, and contacts from Outlook.com, Hotmail, or Microsoft 365 to Cirrux using IMAP import.
- [Switch from Proton](https://cirrux.co/help/switch-from-proton): Migrate your email, calendars, and contacts from Proton Mail to Cirrux using Proton’s export tools.
- [Switch to Cirrux](https://cirrux.co/help/switch-to-cirrux): Learn how to transfer your email to Cirrux and make the switch from your current provider.
- [Workspaces](https://cirrux.co/help/workspaces): How Cirrux workspaces work: invite family members or colleagues, share a domain, and manage billing per workspace.