Email, calendar, and contacts — built on open standards, hosted in Europe.
Cirrux is a fast, independent worksuite – today: email, calendar, reminders and contacts – built on open standards. It works with Apple Mail, Thunderbird, or any client you already love. Your data stays encrypted on European servers.
I'm Rick. I built Cirrux because I got tired of trusting my work to companies that don't have my interests at heart. Microsoft recently cut off the International Criminal Court's email. Google reads everything to sell ads. I wanted something I could trust, without compromising on quality.
Cirrux is that something. Email, calendar, and contacts that just work—without the baggage.
Pick your @cirrux.me address (or bring your own domain), and connect using a wide range of apps you already know, like Apple Mail or Thunderbird. That's it.
Everything you need
IMAP / SMTP
Custom domains, unlimited aliases, and more
CalDAV
Manage events and calendar invites
CardDAV
Manage your contacts
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
Use Cirrux Backup to automatically sync your existing mailbox. Your emails are safe, no commitment yet.
Create your Cirrux account and keep syncing your Google or Microsoft mailbox. Continue using your old provider while you explore.
Point your domain to Cirrux and start receiving new mail here. Keep the sync running to make sure nothing slips through.
Cancel Google or Microsoft whenever you're ready. Your emails, your rules.
Your data, your rules
Your data lives on European servers, protected by GDPR. No US jurisdiction, no surveillance overreach.
All data is encrypted at rest and in transit. Your emails and contacts are protected at every step.
We don't read your emails to sell ads. No tracking pixels, no data mining. Your inbox is yours alone.