addressingdomains · aliases
Mailboxes, domains, aliases. Any combination you need.
Bring your own domains or take an @cirrux.me address. Give every mailbox the addresses it should answer to, and add aliases for the ways people actually reach you.
Independent · European · Open standards
Really goodReally good email
Mailboxes, calendars and cloud storage. For individuals and teams.
Everything you expect from a workspace.
Mail, calendar, contacts and files with modern clients, API access and first class support for open standards.
sharinglink · people
File sharing, built in.
Share a file or a whole folder with a link, or with named people who have to sign in first. Permissions sit on the item itself, and you can withdraw them at any time.
shared mailboxone address
Shared mailboxes.
Give a team a single address like support@ and let everyone work the same inbox. Replies go out from the shared address, not from whoever happened to hit send.
filteringserver side
Smart email filtering and routing.
Your rules run on the server, so the sorting is already done before you open the app.
clientsopen standards
Modern clients that work everywhere.
Fast client for mail, calendar and files. Or keep Apple Mail, Thunderbird or anything else that speaks IMAP, CalDAV and CardDAV.
api · cliopen source
API and open source CLI.
Everything the apps do is available over a documented HTTP API and an open source command line client. It ships with a skill for your own AI, so an agent can work your mail, files and calendar for you.
Cirrux is a modern suite for work. Email, calendars, reminders, contacts and file sharing. It comes with blazing fast clients for email, calendar and files (docs coming soon!), but it also supports open standards to connect your favorite client, like Apple Mail, Thunderbird or Spark. Your AI will like it too, Cirrux has its own CLI so your agent can help you manage your inbox and calendar. All your data is securely located on European servers.
My name is Rick Pastoor. I started building Cirrux independently, without outside funding, because...I can! I wanted something I could trust, without compromising on quality.
Cirrux is that something. Email, calendar and file sharing that just work. In a beautiful, modern package.
A smooth migration.
Switch at your own pace. Your old provider keeps running until you are ready to let it go.
1
Start with a backup
Use Cirrux Backup to automatically sync your existing mailbox. Your emails are safe, no commitment yet.
2
Set up your Cirrux mailbox
Create your Cirrux account and keep syncing your Google or Microsoft mailbox. Continue using your old provider while you explore.
3
Switch your domain
Point your domain to Cirrux and start receiving new mail here. Keep the sync running to make sure nothing slips through.
4
You're done
Cancel Google or Microsoft whenever you're ready. Your emails, your rules.
Your data, your rules.
Cirrux is paid for by subscriptions, so nobody here has a reason to look at your mail.
Hosted in Europe
Your data lives on European servers, protected by GDPR.
Encrypted storage
All data is encrypted at rest and in transit. Your emails and contacts are protected at every step.
No tracking, no ads
We don't read your emails to sell ads. No tracking pixels, no data mining. Your inbox is yours alone.