# 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. - [Authorize Cirrux for domain-wide delegation](https://cirrux.co/help/google-workspace-delegation): How to authorize the Cirrux service account for domain-wide delegation so it can migrate your Google Workspace users. - [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. - [Deliverability](https://cirrux.co/help/deliverability): How Cirrux keeps its sending reputation clean so your mail reaches the inbox: paid-only accounts, per-mailbox sending limits, SPF, DKIM and DMARC, and direct delivery to the recipient server. - [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. - [Encryption](https://cirrux.co/help/encryption): How Cirrux encrypts your data. Cirrux Workspace uses AES-256-GCM envelope encryption at rest with per-workspace keys, while Cirrux Backup is end-to-end encrypted with a key that never leaves your machine. - [Google Sync](https://cirrux.co/help/google-sync): Learn how Cirrux Sync works to import your emails, calendar events, and contacts from Google. - [Google Workspace migration setup](https://cirrux.co/help/google-workspace-sync): How to authorize Cirrux to access your Google Workspace for bulk user migration. - [Google Workspace split-delivery migration](https://cirrux.co/help/google-workspace-split-delivery): Migrate a team off Google Workspace onto Cirrux gradually with split delivery. Run both systems in parallel and cut over MX when ready. - [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 365 split-delivery migration](https://cirrux.co/help/microsoft-365-split-delivery): Migrate a team off Microsoft 365 / Exchange Online onto Cirrux gradually with split delivery. Run both systems in parallel and cut over MX when ready. - [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. - [Reliability & backups](https://cirrux.co/help/reliability): Where Cirrux runs, how your mail and files are backed up, what happens when a server fails, and how to keep your own copy of everything. - [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. - [Security](https://cirrux.co/help/security): Protect your Cirrux account with two-factor authentication and passkeys, and learn how to recognize phishing attempts. - [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.