Attentive

Attentive is an SMS and multi-channel messaging platform used by DTC brands for subscriber acquisition and conversational retention.

SMS journeys are triggered by behaviour, so they depend on that behaviour being tied to a known subscriber rather than an anonymous session.

Attentive is subscriber-first: a visitor opts in through a sign-up unit, and the phone number becomes the key everything else hangs off. Journeys are triggered by events — a browse, an added cart, a purchase — evaluated against that subscriber. Attentive also supports email alongside SMS, which means the same person can be reachable on two channels but only if both identifiers resolve to one subscriber record.

A subscriber is only reachable if their behaviour resolves to them. Upstack matches events to a known subscriber before they reach Attentive, so journeys trigger on the person rather than skipping the sessions that could not be tied to anyone. Email and phone resolving to one record also means cross-channel journeys act on one human instead of two.