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Eonvelope vs Bichon: catalog facts
Eonvelope	Bichon
Free Free and open source under the AGPL-3.0 licence.	Free Free and open source under the AGPL-3.0 licence.
Web, Self-hosted	Web, Self-hosted
Supports IMAP, POP, Exchange and JMAP Thread detection and separate storage of attachments and correspondents	No external database required Unified full-text search across accounts
Requires running a Docker stack and accessing it over HTTPS Smaller project with a short track record	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: AGPL-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.