Kurrier aims to become a complete open-source communications platform built on open standards.
Today's communication tools are increasingly fragmented across proprietary APIs and closed ecosystems. Kurrier's goal is to provide a modern, self-hostable alternative that gives individuals and organizations full ownership of their communication infrastructure.
Rather than inventing new proprietary protocols, Kurrier embraces existing open standards wherever possible.
- Open source first
- Self-hostable
- Privacy by default
- Interoperability over vendor lock-in
- Standards over proprietary APIs
- Modular architecture
- Developer friendly
- Modern email platform
- Shared inboxes
- SMTP
- IMAP
- Gmail API
- SES
- Mailgun
- Postmark
- SendGrid
- Resend
- Calendars
- Contacts
- Drive
- REST APIs
Kurrier is evolving into an interoperable communications platform with support for open standards including:
- JMAP
- CalDAV
- CardDAV
- WebDAV
- Maildir
- mbox
- ICS
- vCard
- OpenPGP
- Sieve
Our long-term goal is to allow users to freely choose their infrastructure, clients and providers without being locked into proprietary ecosystems.