Third-party intent data is the behavioral signal captured by external vendors (Bombora, 6sense, G2, TrustRadius, content-syndication networks) from research activity that happens on properties you do not own, then aggregated to the account level and licensed back to you for scoring, targeting, and outbound routing.
Third-party intent fills the visibility gap that first-party can never close. An account evaluating your category reads reviews on G2, downloads a comparison PDF from an industry publication, attends a webinar a competitor hosted, searches for a competing vendor three times on a B2B search network, or triggers a content-consumption topic on Bombora’s 4,000-publisher network. None of that happens on your site. You cannot capture it yourself. Third-party intent vendors can.
The data is almost always probabilistic. Vendors output weekly topic-level scores per account, with some providers (6sense, Demandbase) layering predictive models on top to flag accounts as in-market. The resolution is the account, not the individual, and the cadence is typically weekly, not real-time.
We use third-party intent to expand the account universe, not to prioritize it. First-party signal tells us this named account is showing high intent right now; third-party signal tells us which accounts to add to the outreach universe in the first place. The typical integration pattern: Bombora or 6sense feeds weekly topic surges into the CRM, a scoring rule elevates any account that crosses a threshold on two or more relevant topics in the same week, and those accounts get routed into the active cadence with a contextual opener that references the research topic without naming the source.
One discipline we follow: we never buy third-party intent without first-party infrastructure in place. Third-party signal is too low-resolution to drive outbound in isolation. Paired with first-party signals captured by Growleads clients, it acts as a radar at the edge of the visibility horizon, not a targeting system.
A client came to us using Bombora-only intent as their primary targeting signal. Reply rates were hovering at 0.6%. We did not drop Bombora. We instead wired first-party deanonymization, then used Bombora to expand the ICP universe to accounts we could not yet see on-property. Result: Bombora-sourced accounts that later hit first-party intent thresholds converted at 4.1x the rate of accounts sourced from Bombora alone. The third-party signal was a useful radar; by itself it was a weak trigger.
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