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Mail-Archiver vs Bichon: catalog facts
Mail-Archiver	Bichon
Free Free and open source under the GPL-3.0 licence.	Free Free and open source under the AGPL-3.0 licence.
Web, Self-hosted	Web, Self-hosted
Supports IMAP, Microsoft 365 and personal Microsoft accounts Exports to mbox and zipped EML	No external database required Unified full-text search across accounts
Requires running a Docker setup Read-only API cannot modify the archive	Only archives mail; it cannot send or reply IMAP is the main source for downloading mail
Self-hosted	Downloadable app, Self-hosted
Open source	Open source
License: GPL-3.0	License: AGPL-3.0
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.