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CURE: Consent Upon Recipient Engagement
draft-cure-core-00

Document Type Expired Internet-Draft (individual)
Expired & archived
Author Madhu Balakrishna
Last updated 2026-07-29 (Latest revision 2026-01-25)
RFC stream (None)
Intended RFC status (None)
Formats
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:

Abstract

This document specifies CURE (Consent Upon Recipient Engagement), a fully native, asynchronous mechanism for expressing and enforcing recipient consent in email without introducing mailbox enumeration, synchronous negotiation, or new SMTP commands. CURE does not guarantee delivery, consent, or sender legitimacy; rather, it provides a privacy-preserving signal that mailbox providers MAY use to improve enforcement and sender accountability.

Authors

Madhu Balakrishna

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)