Per-sender storage (latest-wins, like unsubscribe), pure domain detector
(strict 3 MIME types), admin surfaces (detail/badge/pill/dismiss) and a
read-only REST API field, mirroring the confirmation-detection feature.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Brainstormed design for detecting newsletter confirmation emails at
ingestion, marking them, and surfacing the confirmation link in the admin
(detail section, list badge, dashboard pill, emails-page banner). v1 does
no outbound request; server on-detect actions deferred.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>