Compare software

Nextcloud Mail vs Cypht: catalog facts
Nextcloud Mail	Cypht
Free Free and open source; installed as an app on a Nextcloud server.	Free Free and open source under the LGPL v2.1.
Web, Self-hosted	Web, Self-hosted
Runs on your own Nextcloud server Works with existing IMAP accounts	Unified views across many email accounts Supports IMAP, JMAP and Exchange EWS
Needs a working Nextcloud installation Does not host mailboxes itself	Needs a PHP server or Docker to run Less polished than commercial webmail
Self-hosted	Self-hosted
Open source	Open source
License not stated	License: LGPL-2.1
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 September 24, 2026	Official website Full listing and sources Checked September 23, 2026

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