Subscription mail is a genuinely hard triage problem, and it is a problem of proportion rather than volume: out of forty messages a week, two matter — a price increase and a trial about to convert — and thirty-eight are marketing. The Universal Inbox exists to make those two findable.
Every message in the inbox carries three fields that make triage possible. A category places it in one of seven buckets: Billing, Marketing, Product update, Renewal, Security alert, Required action, or Other. An action-required flag marks the messages that need a human decision. And an optional confidence value records how sure the classifier was about the category it assigned. All three are first-class parts of the API, not display-only decorations.
The screen is built around them. Category tabs filter the stream, an unread toggle narrows it further, and an action-only filter collapses everything to just the messages that need you. Open a message and, when a confidence value is present, you see it rendered as a labelled meter — high, moderate, or low — so a category the classifier was unsure about looks visibly different from one it was confident in. That is deliberate: a triage surface that hides its own uncertainty trains you to over-trust it.
Messages arrive through ingest channels you register and verify yourself, and each message can be linked back to the Relationship it concerns, so context is inline — which subscription this is about, what it costs, when it renews next. Ingest is metered against your plan, so a runaway connector cannot silently consume your quota.
Category, confidence, and the action-required flag are supplied when a message is ingested, by whatever registers the channel, rather than inferred by a model reading the message body. The UI renders confidence properly and filters on all three, so triage stays fast and predictable.
Do it yourself
Build the triage surface end to end — register an ingest channel, verify it, log a message with a category and confidence, then filter the stream down to only what needs a decision.
Open the Universal Inbox to see every subscription message in one stream, with category tabs across the top.
You should see: Billing, Marketing, Product updates, Renewals, Security alerts, Required actions, and Other are each one click away.
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