Independent · European · Open standards
Really good email.
Mailboxes, calendars and cloud storage. For individuals and teams.
Cirrux is a fast, modern suite for work. Email, calendars, reminders, contacts and file sharing. It comes with blazing fast clients for email and files (calendar and docs coming soon!), but it also supports open standards to connect your favorite client, like Apple Mail, Thunderbird or Spark. All your data is securely located on European servers.
My name is Rick Pastoor. I started building Cirrux independently, without outside funding, because I got tired of relying on companies that don’t have my interests at heart. 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.
Since launching the first version of Cirrux in in 2025, hundreds of folks trust me with their data and help shape a next generation workspace.
Pick your @cirrux.me address (or bring your own domain), and use a collection of import- and sync tools to seamlessly migrate. I’d be delighted to have you on board.
Everything you need
Built on open standards
IMAP / SMTP
Custom domains, unlimited aliases, and more
Calendar
CalDAV
Manage events and calendar invites
Contacts
CardDAV
Manage your contacts
Reminders
CalDAV
Track your tasks and reminders
Cirrux is a work in progress. If you want in on something new and want to help shape it, jump in. I have big plans.
I'm building Cirrux to last. No VC, no growth-at-all-costs. Just a product that earns its keep by being useful. Your subscription keeps the servers running and allows me to improve it every day.
--Rick
Switch at your own pace
A smooth migration
Start with a backup
Use Cirrux Backup to automatically sync your existing mailbox. Your emails are safe, no commitment yet.
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.
Switch your domain
Point your domain to Cirrux and start receiving new mail here. Keep the sync running to make sure nothing slips through.
You're done
Cancel Google or Microsoft whenever you're ready. Your emails, your rules.
Your data, your rules
Privacy & Security
Hosted in Europe
Your data lives on European servers, protected by GDPR. No US jurisdiction, no surveillance overreach.
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.