TL;DR
- RB2B is the strongest fit for US-traffic sites that want person-level identification at the lowest entry price, from free to $199 monthly with unlimited users on every plan.
- Warmly is the strongest fit for teams wanting identification bundled with orchestration, though its acquisition by HubSpot makes contract terms a live question.
- Albacross is the strongest fit for European traffic, where the other two are weakest, starting at €59 monthly annually.
- Geography is the deciding factor, not features. RB2B is US-only, Albacross is European-strong, and choosing wrongly means paying for visitors you cannot see.
- Every published match rate in this category is vendor-reported. The realistic range is 15 to 30% of total traffic, not the 70 to 80% some marketing implies.
Contents
- The short answer
- The Warmly acquisition
- Match rates and coverage compared
- Pricing compared
- RB2B in detail
- Warmly in detail
- Albacross in detail
- Why match rate claims mislead
- Person-level versus company-level identification
- Which tool fits which team
- FAQ: RB2B, Warmly, and Albacross
The short answer
These three tools solve the same problem and are separated almost entirely by geography and identification depth.
RB2B identifies individual people visiting US websites and prices aggressively. Albacross identifies companies visiting European websites and is the most credible option for European traffic. Warmly sits between them, bundling identification with orchestration and AI features, and has now been acquired by HubSpot.
If a meaningful share of your traffic is European, RB2B will not see it, and no amount of feature comparison changes that. If your traffic is US-heavy and you need person-level detail, Albacross does not offer it. The geographic question resolves most decisions before you reach a feature table.
The Warmly acquisition
Warmly has been acquired by HubSpot. The company's own LinkedIn presence now reads "Warmly, (acquired by HubSpot)".
For a buyer evaluating in 2026, three things follow.
Standalone availability is uncertain. Acquired products in this pattern typically fold into the acquirer's platform, as Clearbit did when it became Breeze Intelligence. That process removed standalone access entirely for non-HubSpot teams. Whether Warmly follows the same path is not yet clear, but the precedent is directly relevant.
HubSpot alignment becomes a factor. If you are on HubSpot, this is potentially good news, since the integration will likely deepen. If you are on Salesforce, Attio, or Pipedrive, it is a risk to price in.
Contract terms need attention now. Warmly bills annually with a minimum around $10,800. Signing a twelve-month contract with a company mid-acquisition warrants asking directly about product continuity, data export rights, and what happens if the standalone product is discontinued.
This is not a reason to exclude Warmly. It is a reason to ask questions that would be unnecessary with an independent vendor, and to prefer shorter terms.
Match rates and coverage compared
| Dimension | RB2B | Warmly | Albacross |
|---|---|---|---|
| Identification level | Person-level | Person-level | Company-level |
| Geographic coverage | ⚠️ US only | US-focused | ✅ European strength |
| Published match rate | 70 to 80% claimed with Demandbase | 15 to 25% | Not published as a rate |
| Realistic share of traffic | 15 to 30% | 15 to 25% | Varies by market |
| Unlimited users | ✅ All plans | ❌ | ❌ |
| Free tier | ✅ 150 resolutions | ✅ | ❌ |
| SOC 2 Type II | ✅ | Not confirmed | Not confirmed |
| Orchestration features | ❌ | ✅ | ⚠️ Add-ons |
| Ownership | Retention.com | HubSpot | Independent |
| Scale | 100,000+ websites | 97 employees, YC-backed | 10,000+ customers, 14 employees |
Pricing compared
| Tier | RB2B | Warmly | Albacross |
|---|---|---|---|
| Free | 150 resolutions, company only | ✅ Available | ❌ |
| Entry | Starter $79, 300 resolutions | ~$700 monthly | Starter €59 monthly annual |
| Mid | Pro $140 to $149, 600 resolutions | ~$900 monthly | Professional €149 monthly |
| Upper | Pro+ $199 | $1,500+ monthly | Organisation €375 monthly |
| Billing | Monthly available | Annual only, ~$10,800 minimum | Annual, monthly costs more |
| Users | Unlimited on all plans | Tier-limited | Tier-limited |
Albacross monthly billing is materially worse than annual: €84 against €59, and the monthly Starter plan includes only 10 email and 5 phone credits. API, webhooks, and ABM features are add-ons even on the top tier.
Sources conflict on RB2B Pro at $140 versus $149 and on Warmly's entry tier across $700, $900, and $1,500. Confirm before budgeting.
1. RB2B
Best for: US-traffic sites that want person-level identification at the lowest credible price, with the whole team able to see results.
RB2B's pricing is genuinely disruptive for this category. Person-level identification starting at $79 monthly, with unlimited users on every plan including free, undercuts everything else here by an order of magnitude. Unlimited users matters more than it sounds: competitors charge per seat, which discourages giving reps direct access to the signal they are supposed to act on.
It runs on 100,000+ websites, holds SOC 2 Type II, and carries a G2 rating of 4.5 across 283 reviews.
Pricing: Free at 150 monthly resolutions, company-level only. Starter at $79 for 300 resolutions with LinkedIn URLs. Pro at $140 to $149 for 600 resolutions, adding business emails and integrations. Pro+ at $199 with premium resolution. Unlimited users throughout.
Where it falls short: United States only. If you sell into Europe or APAC, those visitors are simply invisible, and this is the single most important limitation in this comparison. The 70 to 80% resolution figure that circulates describes the combined RB2B and Demandbase product, not standalone RB2B, and quoting it without that qualifier is misleading. Reviewers consistently note that the tool captures a fraction of total traffic. It is owned by Retention.com, which is worth knowing for data-handling diligence.
Verdict: The strongest fit for US-focused sites on price and access model. For European traffic it solves a fraction of the problem.
2. Warmly
Best for: Teams wanting identification bundled with orchestration and AI, and comfortable with acquisition uncertainty.
Warmly's differentiator has been doing more than identifying. It orchestrates: surfacing visitors in Slack, triggering outreach, and coordinating across channels. For teams that would otherwise wire identification into a separate workflow tool, that bundling has real value.
Founded in 2020 with 97 employees and YC backing, it published a 15 to 25% match rate, which is one of the more honest figures in a category prone to inflation.
Pricing: Free tier available. Paid plans at roughly $700, $900, and $1,500+ monthly, annual only, with an effective minimum around $10,800 per year. Sources disagree on the exact tier structure.
Where it falls short: The annual-only billing and roughly $10,800 minimum make it roughly ten times RB2B's entry cost, which requires the orchestration layer to be genuinely used to justify. Acquisition by HubSpot introduces product continuity risk, particularly for non-HubSpot teams. And Warmly publishes competitor reviews as part of its content marketing, so its comparative material should be read as vendor content rather than analysis.
Verdict: The strongest fit where orchestration is the requirement and HubSpot is your CRM. Ask about product continuity and data export before signing an annual term.
3. Albacross
Best for: European traffic, where the other two options in this comparison are weakest.
Albacross is the European answer. Stockholm-based, founded in 2014, with 10,000+ customers and only 14 employees, it has focused on company-level identification for European markets rather than competing on person-level detail.
For a team selling into Germany, the Nordics, or the Benelux, this is often the only one of the three that will see your traffic at all.
Pricing: Starter at €59 monthly billed annually, or €84 monthly, with the monthly plan including only 10 email and 5 phone credits. Professional at €149. Organisation at €375. API, webhooks, and ABM capabilities are add-ons even on the top tier.
Where it falls short: Company-level only, so you learn that a company visited but not who. For enterprise and upper mid-market selling, where buying committees run to six or more people, knowing the company without the person leaves substantial work. The add-on structure for API and webhooks on a €375 plan is difficult to defend. At 14 employees, roadmap velocity and support depth are limited relative to competitors.
Verdict: The strongest fit for European traffic, largely by default. Pair it with a person-level tool if you also have meaningful US traffic.
Why match rate claims mislead
Match rate is the headline metric in this category and the most consistently misrepresented.
The first problem is denominators. A vendor can report match rate against total traffic, against traffic from target markets, against business traffic excluding consumer ISPs, or against traffic it attempted to resolve. These produce wildly different numbers from identical data, and vendors rarely specify which they are using.
The RB2B figure illustrates this well. The 70 to 80% number that circulates describes RB2B combined with Demandbase, not RB2B alone. Quoted without that context it implies performance the standalone product does not deliver.
The second problem is that identification rate is not the useful metric anyway. What matters is how many identified visitors are in your ICP and reachable. A tool identifying 30% of traffic where most visitors are students and competitors is worth less than one identifying 15% that are all target accounts.
Vector publishes a 15 to 30% identification rate and Warmly publishes 15 to 25%. Those figures are consistent with each other and with what practitioners report, and they are a more honest starting point for planning than any number above 50%.
We have not run a first-party benchmark across these three tools on a common traffic set. Doing so properly would require identical traffic through all three simultaneously over a meaningful period, which no published comparison we found has done. Until someone does, treat every figure here, including the ones we have quoted, as vendor-reported.
Person-level versus company-level identification
The distinction between person-level and company-level identification is the second structural choice in this category, and it interacts with deal size.
Company-level tells you an organisation visited. For a team with a defined target account list, this is often sufficient, because it triggers an account-based play rather than an individual outreach. Albacross, Leadfeeder, Snitcher, and Leadinfo operate here, and they are considerably cheaper.
Person-level tells you which individual visited, usually with a LinkedIn URL and sometimes a business email. RB2B and Warmly operate here. The value is obvious for a rep, but so is the constraint: it only works where the identification graph has the person, which is why it is heavily US-weighted.
The question worth asking is what your team will do with the signal. If your motion is account-based and a visit triggers a coordinated play across a buying committee, company-level is enough and costs less. If your motion is individual outreach and a rep will message the specific person who visited, person-level is what you need.
For enterprise and upper mid-market selling, company-level is often the better fit despite sounding less impressive. A single visitor from a target account rarely represents the buying committee, and treating one identified individual as the buyer is a common error. What matters is that the account is active, which is exactly what company-level tools tell you at a fraction of the price.
There is also a privacy dimension. Person-level identification of individuals who have not identified themselves sits in contested territory, particularly under GDPR, which is part of why the credible person-level tools are US-focused. That is a question for your counsel, and it should be resolved before deployment rather than after.
Which tool fits which team
| Your situation | Recommendation | Reasoning |
|---|---|---|
| US traffic, want person-level, cost-sensitive | RB2B | Lowest entry price with unlimited users |
| European traffic | Albacross | The other two will not see your visitors |
| Both US and European traffic | RB2B plus Albacross | Cheaper combined than one premium tool |
| Want identification plus orchestration | Warmly | Bundling is the argument, if used |
| On HubSpot | Warmly | Acquisition should deepen integration |
| On Salesforce or Attio | RB2B or Albacross | Warmly's continuity is less certain for you |
| Account-based motion, target list defined | Albacross or a company-level tool | Person-level detail is not what you act on |
| Whole team needs access to signal | RB2B | Only one with unlimited users on all plans |
| Want to test before paying | RB2B | Free tier at 150 resolutions |
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FAQ: RB2B, Warmly, and Albacross
Was Warmly acquired by HubSpot?
Yes. Warmly's own LinkedIn presence reads "Warmly, (acquired by HubSpot)". Standalone availability going forward is not yet clear. The Clearbit precedent, where a HubSpot acquisition removed standalone access entirely, is directly relevant, so ask about product continuity and data export before signing an annual contract.
Does RB2B work outside the United States?
No. RB2B identifies US visitors only. If a meaningful share of your traffic is European or APAC, those visitors are invisible to it regardless of plan. This is the single most important constraint in this comparison.
What match rate should I realistically expect?
Between 15 and 30% of total traffic. Vector publishes 15 to 30% and Warmly publishes 15 to 25%, and those are consistent with practitioner reports. The 70 to 80% figure associated with RB2B describes the combined RB2B and Demandbase product, not standalone RB2B.
Is person-level identification worth the extra cost?
It depends on your motion. If a rep will message the specific individual, yes. If a visit triggers an account-based play across a buying committee, company-level identification from Albacross, Leadfeeder, or Snitcher gives you the same trigger for considerably less. For enterprise and upper mid-market selling, one identified individual rarely represents the committee.
Which is cheapest?
RB2B by a wide margin, from free to $199 monthly with unlimited users. Albacross starts at €59 monthly annually. Warmly's effective minimum is around $10,800 annually. The gap is roughly tenfold between RB2B and Warmly at entry.
Can I use more than one?
Yes, and for teams with both US and European traffic it is usually the right answer. RB2B for US person-level plus Albacross for European company-level costs less combined than a single premium tool and covers more of your actual traffic.





