Immune puts a human-checkpoint in front of public inboxes

Field notes

Immune describes an email-routing setup in which selected addresses first point inbound MX or forwarding through its service. Unknown senders encounter a human-verification challenge, while verified contacts can bypass it later; the page says suspicious messages remain in quarantine for review. Destinations named on the homepage include Intercom, Help Scout, Gmail, and other configured mailboxes, with separate controls for each protected address.