Kurrier Instant webmail

Kurrier Instant webmail is an open-source webmail client designed to work with a wide range of email providers through existing protocols such as IMAP and SMTP. The platform enables users to transform their current email credentials into a modern, private webmail experience that includes features like email, calendar, contacts, and storage, all integrated into a single workspace. Kurrier emphasizes privacy and user control by allowing self-hosted deployment, ensuring that data and credentials remain under the user's management without external tracking or telemetry.

The tool supports integration with providers including Gmail, SES, SendGrid, and any service compatible with IMAP or SMTP, automatically creating a functional inbox with support for threaded conversations and attachments. Kurrier offers reliable message synchronization, continuously updating new mail, sent items, and deletions to keep the local inbox current. Fast local search and filtering capabilities are available, allowing users to search subjects, senders, and message content instantly through local indexing, without reliance on cloud APIs.

Kurrier can be deployed quickly using Docker or by running it from source, making it suitable for installation on personal machines, servers, or virtual private servers (VPS). It is fully open-source and released under a permissive license, with extensibility options to add new providers, implement custom logic, or integrate with other projects. In addition to IMAP and SMTP, Kurrier supports CalDAV, CardDAV, and WebDAV services, further broadening its compatibility for calendar, contacts, and storage management.

This platform is aimed at users seeking a private, customizable, and self-hosted email workspace that consolidates essential communication and organizational tools. Its open-source nature and extensibility make it suitable for individuals and organizations looking to maintain full control over their email infrastructure and data.