kurrier-org/kurrier

Health v2 · maintenance only

Flags: no_license

Adoption not part of the score

1039 stars · 71 forks observed · 2026-09-03

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Kurrier is a self-hosted, open-source workspace that unifies email, calendars, contacts, and file storage into a single modern web interface. It connects to existing providers via open standards like IMAP/SMTP, CalDAV, CardDAV, WebDAV, and S3, keeping all data on your own infrastructure.

Use cases

• self-host a private webmail client for my IMAP/SMTP accounts
• sync calendars across iOS, Android, and Thunderbird with CalDAV
• manage contacts with CardDAV sync on my own server
• replace Google Workspace with a self-hosted email and calendar suite
• add webmail to SES, SendGrid, Mailgun, or Postmark accounts
• store and access files via WebDAV or S3 in one workspace
• manage multiple email identities and domains in one interface
• provision email users programmatically via an admin API

When to choose

• you want a private, self-hosted alternative to Gmail/Google Workspace
• you need a unified web UI over existing IMAP/SMTP, CalDAV, CardDAV, and WebDAV services
• you want no telemetry and full control of your mail and credentials
• you need multi-provider email identities with local search and filtering

When to avoid

• you need a full mail server that receives mail directly rather than syncing via IMAP/SMTP
• you want a zero-configuration hosted solution without running your own server
• you require enterprise groupware features beyond email, calendar, contacts, and storage

Facets

application · maturity active

email http-server search-engine file-upload auth self-hosted email self-hosted developer-tools web-development privacy self-hosted cross-platform webmail caldav carddav webdav s3 imap smtp calendar contacts nextjs web-server docker nodejs

Member repositories

For agents

markdown · JSON · MCP: product_card(name="kurrier-org/kurrier")