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Published September 21, 2026 · Updated September 21, 2026
The answer up front: RB2B pipes the names, LinkedIn profiles, and (on paid plans) emails of your US website visitors into Slack - $79-199/month, bootstrapped, famously simple. Three reasons people look elsewhere: person-level ID is US-only by design, the free tier dropped person-level data in January 2026, and real-world match rates run 15-30% on standard plans. The short version: Warmly for deeper inbound conversion (knowing it is being acquired by HubSpot), company-level tools for EU-compliant coverage, and Valley (that is us) if what you actually wanted was pipeline from warm signals - not another Slack channel of names nobody messages.
Disclosure: Valley makes one of the tools in this comparison. We have marked our entry clearly, and where the other tool is the better fit for your motion, we say so.
How we know this category: we run outbound for 1,000+ LinkedIn accounts and have sent 30M+ messages. Competitor facts below are dated September 2026 and drawn from their published pages plus named third-party reviews.
Valley is an AI outbound platform that finds the people most likely to buy from you - from live buying signals, natural-language search, or your own lists - qualifies them against your ICP, researches each one, and sends personalized messages across email and LinkedIn that get 15-45% reply rates, against a category average of about 2%.
► Skip the tool-shopping spiral: see warm, signal-based outreach on your own account - free for 7 days
Tool | Price (Sep 2026) | What it identifies | Best for |
|---|---|---|---|
RB2B | Free-$199/mo | Person-level US website visitors | Visitor alerts to Slack, fast setup |
Valley | $149/mo quarterly · $199 monthly | LinkedIn signals: viewers, engagers, hiring, funding | Signals to replies, 15-45% rates |
Warmly | From $10,000/yr | Person-level visitors + AI chat (HubSpot acquisition pending) | Inbound conversion at mid-market scale |
Company-level tools | Varies | Companies, not people - works internationally | EU traffic, compliance-sensitive teams |
Amplemarket | From $600/mo (annual) | Intent + database + sequences | All-in-one outbound consolidation |
Valley (that is us) - from "who visited" to "who replied"
RB2B's output is a name in Slack; someone still has to qualify that person, research them, and write something worth answering. Valley starts from signals RB2B cannot see - who viewed your LinkedIn profile, engaged your posts or a competitor's, started hiring, just raised - and runs the whole loop: ICP qualification, per-person research, personalized sends across LinkedIn and email, with you approving every message.
It works for non-US pipelines too, because LinkedIn signals are not gated by visitor IP geography. 15-45% reply rates against a category average of about 2%; $149/mo billed quarterly, 7-day trial.
Warmly - the step up, with an asterisk
Warmly adds AI chat, buying-committee mapping, and orchestration on top of person-level ID - at $10,000-30,000/year. The asterisk: HubSpot announced it is acquiring Warmly on June 30, 2026. Existing contracts hold; the long-term product lives inside HubSpot.
The company-level route - when US-only is the dealbreaker
Company-level identification works on international traffic and avoids person-level privacy exposure: you learn which firms visited, then find the right person yourself. We compared Leadfeeder, Albacross, and the rest of that category - prices, GDPR posture, the person-vs-company tradeoff - in our website visitor identification guide.
Amplemarket - if you are consolidating anyway
For teams about to buy a database, a sequencer, and a dialer separately, Amplemarket bundles them with intent signals from $600/month on an annual-only contract. G2 reviewers like the AI copy; the recurring flags are deliverability at scale and the upfront annual commitment.
► The alternative that measures replies: Try Valley free for 7 days
Why is RB2B US-only?
Their own site says it plainly: person-level identity is a US-only technology with a US-only database. Visitors outside the US resolve at company level at best. For international traffic you need company-level tools or a signal source that is not IP-based - LinkedIn engagement, for example.
What happened to RB2B's free plan?
In January 2026 person-level contact data moved out of the free tier; free now shows company-level identification (150 resolutions/month). Person-level starts at $79/month (LinkedIn profiles, no emails) and $149-199/month with emails.
How accurate is RB2B?
Their Pro+ tier claims 35-45% person-level coverage; independent reviews report 15-30% on standard plans. The 70-80% number their marketing cites combines person-level and company-level (via Demandbase) matches - read it carefully.
What is the best RB2B alternative?
For deeper inbound conversion: Warmly (noting the HubSpot acquisition). For EU coverage: company-level tools. For turning warm signals into booked meetings rather than Slack notifications: Valley - 15-45% reply rates, $149/month.
