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Bichon

Self-hosted email archiving server with full-text search

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Alternative to: mimecast, proofpoint archive

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2.0.0-alpha.1

2026-07-28

What’s Changed

⚠️ Breaking Changes: Storage Engine Upgrade

This release replaces the underlying blob storage from fjall to bichon-blob. A one-time data migration is required.

📖 Full migration instructions: Bichon v2.x Migration Guide

Quick reference:

  • Upgrading from v0.3.7: Run bichon-admin and select “Migrate Legacy v0.3.7 Storage to v2.x”
  • Upgrading from v1.x: Run bichon-admin and select “Migrate v1.x Storage to v2.x (Fjall → bichon-blob)”

The tool will prompt for --bichon-root-dir and other paths. After migration, the v2.x server detects STORAGE_VERSION=2 automatically.

New Features

  • Replace fjall with self-developed bichon-blob storage engine

Fixes

  • Skip oversized blobs during migration instead of aborting
  • Fix IMAP proxy configuration issue (#326)
  • Fix healthcheck with macvlan (#329)
  • Fix double scrollbar issue in email content display

Full Changelog: https://github.com/rustmailer/bichon/compare/1.6.2…2.0.0-alpha.1

Changelog on GitHub →