OpenArchiver

OpenArchiver is a comprehensive, self-hosted email archiving and compliance platform built to help organizations ingest, index, store, and search email communication data across diverse sources like Gmail, Microsoft 365, IMAP, PST, and more. It’s designed for scenarios where reliable, tamper-proof archiving and full-text search across both emails and attachments are essential for legal discovery, compliance, or long-term records retention. The platform combines a modern web UI with powerful backend services, including fast indexing, deduplication, encryption at rest, and asynchronous ingestion workflows, making it suitable for both small teams and enterprise deployments. Beyond simply capturing email, it emphasizes security and auditability with features like secure storage formats, file integrity verification, and detailed audit trails of user interactions.