RB2B starts free and tops out at $199 a month for its highest resolution tier, while Warmly's cheapest plan runs $10,000 a year, per each vendor's pricing page. Both tools de-anonymize website visitors, but RB2B is built for solo SDRs who just want names in Slack, and Warmly is a full inbound-orchestration platform with AI chat agents layered on top. Pick RB2B for volume on a budget, Warmly for an all-in-one motion.

How do RB2B and Warmly compare in 2026?

RB2B and Warmly both identify anonymous visitors but solve different problems at different price points. Here's the side-by-side on pricing, capability, accuracy, integrations and team fit.

Comparison Axis	RB2B	Warmly	Better For
Pricing	Free ($0/mo, 150 resolutions), Starter $79/mo, Pro $149/mo, Pro+ $199/mo, per RB2B's pricing page	AI Web-Deanonymization $10,000/yr, Inbound Chat $20,000/yr, AI Inbound Autopilot $30,000/yr, per Warmly's pricing page	RB2B, roughly 10x cheaper to start
Core capability	Visitor-to-company and visitor-to-person identification pushed to Slack or Teams	Visitor identification plus AI chat agents that qualify and book meetings live	Depends on whether you want identification only or a full inbound motion
Data accuracy	Tiered "identity graph waterfall," resolution quality improves by plan, per RB2B's site	ICP filtering layered on top of de-anonymization data, per Warmly's site	Tie, neither publishes a third-party accuracy audit
Integrations	Clay, HubSpot, Salesforce, Zapier, Apollo, webhooks and CSV on Pro and above	CRM sync, lead routing and retargeting bundled into every paid tier	RB2B, broader native list at a lower entry cost
Best-fit team size	Solo SDRs and small sales teams testing visitor ID on a budget	Marketing-led teams running a dedicated inbound or ABM motion	Team size and available budget dependent

How much do RB2B and Warmly actually cost in 2026?

RB2B's paid tiers run $79 to $199 a month, with a functional free plan included, per RB2B's pricing page. Warmly skips monthly billing entirely and starts at $10,000 a year, which works out to roughly $833 a month if you annualize it.

RB2B's $79/mo Starter plan includes 300 monthly resolutions and LinkedIn URL pushes into Slack or Teams, no email addresses yet. Pro at $149/mo adds business emails plus Clay, HubSpot, Salesforce, Zapier and Apollo integrations. Pro+ at $199/mo scales resolutions up to 2,500,000 a month, per RB2B's pricing page.

Warmly's $10,000/yr Web-Deanonymization plan (or $4,875/quarter) covers ICP filtering, Slack alerts and CRM sync. Inbound Chat runs $20,000/yr for a live AI chatbot; AI Inbound Autopilot runs $30,000/yr for unlimited agents that qualify and book meetings, per Warmly's pricing page.

What's the real difference between RB2B and Warmly?

RB2B is a notification engine: it spots a visitor, resolves who they are, and drops the name in Slack. Warmly adds an AI chat agent that talks to the visitor live, qualifies them, and books the meeting without a human.

That gap explains the price gap. You're not paying Warmly 50-100x more for better identification, you're paying for the AI agents and inbound-chat layer sitting on top of it.

Which one fits your existing sales stack?

RB2B's Pro and Pro+ plans push data into Clay, HubSpot, Salesforce, Zapier and Apollo for $149-$199/mo. Warmly bundles CRM sync, lead routing and retargeting into every paid tier starting at $10,000/yr, per Warmly's pricing page.

If your team already runs on Clay or Apollo, RB2B slots in cheaper and faster. If marketing owns the site and wants an ABM retargeting motion, Warmly's bundle saves you from stitching four tools together.

RB2B vs Warmly: which should you actually use?

If you're a small sales team trying to prove visitor ID even matters, start with RB2B's free plan and upgrade once qualified names show up. Don't commit five figures before validating the signal.

Warmly only makes sense with marketing headcount to run its AI Studio Agents and a budget north of $10,000/yr. Most teams under 20 people overpay for Warmly's autopilot tier when RB2B Pro covers the same need for less.

Frequently asked questions

Is RB2B free to use?

Yes. RB2B's Free plan costs $0/month with 150 monthly visitor resolutions, Slack-only delivery, per RB2B's pricing page. Email addresses and CRM integrations start on the $149/mo Pro plan.

How much does Warmly cost per month?

Warmly doesn't sell monthly plans. Its cheapest tier, AI Web-Deanonymization, bills at $10,000/year or $4,875/quarter, per Warmly's pricing page, roughly $833-$1,625 a month depending on cadence.

Does RB2B give you the email address of an identified visitor?

Only on the Pro plan ($149/mo) and above. RB2B's Free and Starter plans identify the person and company but withhold email addresses, per RB2B's pricing page.

Can RB2B or Warmly connect to Salesforce and HubSpot?

Yes. RB2B includes Salesforce and HubSpot on Pro and Pro+ ($149-$199/mo). Warmly includes CRM sync on every paid tier starting at $10,000/year, per Warmly's pricing page.

Either tool just tells you who's on your site. Turning that into booked meetings still takes copy, sequencing and a mailbox setup that doesn't land in spam. Modern Inbound has booked 3,000+ qualified B2B meetings pairing visitor-ID data with managed cold email execution. See how our setup works.

By Rishabh Ambasta, Founder, Modern Inbound.

RB2B vs Warmly: Pricing, Features and Verdict (2026)