Written by: Doug Camplejohn, CEO & Co-Founder, Coffee | Last updated: September 10, 2026
Key Takeaways
- RB2B and Leadfeeder each cover one core Warmly capability and enforce strict free-tier ceilings that cap monthly usage.
- No free tool matches Warmly’s person-level identification or orchestration features. Free plans operate at the company level with hard limits.
- RB2B’s free tier delivers Slack alerts within a 150-credit monthly cap and excludes CRM push, exports, and person-level data.
- Leadfeeder’s free Lite plan identifies up to 100 companies monthly with a 7-day data-retention window before records disappear.
- When free-tier ceilings start blocking pipeline, see Coffee’s pricing and plans to turn anonymous visitors into named, qualified prospects.
How Warmly Works, Capability By Capability
On deanonymization, Warmly resolves visitors to the company level reliably and to the individual in some cases, using a mix of IP-to-company matching, reverse-IP data, and partner data sources. Warmly reports person-level identification at approximately 15% of visitors and company-level at approximately 65%.
Warmly’s free plan provides up to 500 de-anonymized visitors per month but excludes all automation and orchestration features that the paid tiers are built around. The free tier shows the floor of what Warmly does. Sequences, AI chat, routing, and retargeting all sit behind the paywall.
What You Give Up Versus Warmly
Visitor Deanonymization. Every free alternative in this category operates at the company level. Warmly’s person-level on-site identification sits in the Inbound tier, priced at approximately $30,000 per year (with Inbound Chat listed at $20,000/year). No free tool replicates this person-level reach.
Person-Level Identification. RB2B’s person-level identification is US-only by design. It resolves only visitors matched to US home addresses via IP ringfencing. For non-US traffic, RB2B offers a separate global company-level product that does not resolve to individuals. RB2B’s free tier was scaled back in January 2026 to company-level identification only, capped at 150 credits per month. Named contact data now requires a paid plan starting at $79 per month.
Slack Alerts. RB2B’s free tier pushes data directly into a Slack channel with no expiry date. Because that delivery is the entire workflow, the trade-off is noise at scale and no downstream automation. Slack plus manual copy-paste is where it ends.
History And Export. History and export are the two places free tiers cut deepest. Leadfeeder’s free tier retains identified-company data for only 7 days, after which it is no longer accessible. RB2B takes the other half of the same cut: its free tier does not include webhook or Zapier/Make integrations, CRM push, CSV exports, or API access.
If You Mainly Use Warmly For One Job, Pick The Free Tool That Does It
Visitor Deanonymization
Leadfeeder’s free Lite plan covers up to 100 identified companies per month with unlimited seats and 7-day data retention. It gets closest to Warmly’s deanonymization function at the company level. What breaks: no person-level resolution, and any company not reviewed within the 7-day window disappears from the free tier permanently.
Free Warmly Alternative With Slack Alerts
For Slack alerts, RB2B is the free tool to pick. The free tier is a permanent offering requiring no credit card to start, with Slack delivery and no expiry on the notification. The ceiling is the 150-credit monthly cap at company level mentioned earlier. What breaks: no CRM push, no export, and no enrichment. The entire workflow is Slack notification plus manual copy-paste into whatever system you use next.
Warmly Alternatives With No Credit Card
RB2B and Leadfeeder both start without a card. Leadfeeder offers a 14-day trial with no credit card required, after which the account automatically downgrades to the permanent free Lite tier. The moment you need routing, enrichment, or history beyond the 7-day retention window, you move to a paid tier.
Ready to move past free-tier ceilings? See how Coffee turns anonymous visitors into named prospects.
What Happens At The Free-Tier Ceiling
Is RB2B Free Forever?
RB2B’s free tier is indeed permanent. The plan requires no credit card and uses the 150-credit monthly cap at the company level. Person-level identification and integrations sit behind paid tiers. Paid plans start at $79/mo for 300 resolutions, $140/mo for 600, or $199/mo for the Pro+ tier. When you hit the ceiling, new visitors that month simply go unidentified. There is no overage, no warning queue, and no data carry-forward.
What Does Warmly’s Free Plan Actually Include?
Warmly’s free plan provides up to 500 de-anonymized visitors per month at both company and contact level and excludes all automation and orchestration features. Warmly’s paid tiers start at $10,000/year for AI Web-Deanonymization (10K monthly credits), $15,000/year for the AI TAM Agent, $20,000/year for Inbound Chat, and $30,000/year for AI Inbound Autopilot. The jump from free to the cheapest paid tier is steep: $0 to approximately $700/month. Smaller teams that want person-level data without the full orchestration suite have no mid-tier option. When you exhaust the 500-visitor free allotment mentioned earlier, identification stops for the remainder of the month.
Leadfeeder’s 14-day Web Visitors trial auto-downgrades to the permanent free Lite tier if no paid subscription is purchased. Data and history from the trial period do not carry over to the free tier’s 7-day window.
Where Coffee Fits
Once free-tier ceilings start costing you pipeline, the question shifts from “what is free” to “what is next.” Coffee is not a free alternative to Warmly. It is the paid next step for teams that have outgrown free-tier ceilings and need a system that closes the loop from pixel hit to outbound without manual copy-paste.
Coffee’s Visitor Identification uses a single tracking pixel to turn anonymous traffic into named, qualified prospects. The pixel infers two layers of data: who the visitor is (name, title, email, LinkedIn profile) and what they did (company, pages visited, time on site, first or returning visit). Real-time Slack notifications surface high-fit visitors, and one click adds the prospect to Coffee with all enrichment pre-filled.
The differentiator is Suggested Leads. Where tools like RB2B and Warmly surface either a company name or an undifferentiated list of people, Coffee uses your buyer persona to recommend specifically which two or three humans inside that visiting company to reach out to. It also surfaces their LinkedIn profiles for instant outbound. No other free or low-cost tool in this category does this.
Coffee is SOC 2 Type 2 and GDPR compliant. Data is not used to train public models. It works as a standalone AI-first CRM for small companies (1–20 employees), or as a Companion App on top of Salesforce or HubSpot for teams that are already committed to those platforms.
Compare Coffee’s plans for your team.
If You Meant Email Warmup, Not Visitor ID
“Warmly” surfaces alongside email warmup queries because the name overlaps with tools like TrulyInbox in search results. Warmly the platform is a website visitor identification and orchestration product. It does not handle email deliverability or inbox warming. If you are looking for a free email warmup tool, the right starting point is a search for “email warmup free” rather than any tool on this page.
What Real Users Complain About
Across practitioner discussions and public reviews, several themes recur with free visitor identification tools. Here is what users report, with sources where available:
- Credit Ceilings Hit Faster Than Expected. A team with 8,000 unique monthly visitors, a 3% ICP match rate, and 60% US traffic would generate around 144 person-level reveals per month. That volume hits RB2B’s free-tier ceiling in the first month.
- US-Only Coverage. Most person-level visitor identification tools geofence the EU and only run person-level reveal on US traffic. Resolving a named EU individual from anonymous traffic without consent carries real legal risk under GDPR. Non-US traffic falls back to company-level and loses the LinkedIn match entirely.
- Data-History Windows. Seven days on Leadfeeder’s free tier is not enough for any team that reviews pipeline weekly. Visitors identified on Monday are gone before the Friday review.
- Renewal Pricing Shock. Leadfeeder’s cost is tied directly to identified-company volume, so a traffic spike can automatically push a user into the next pricing tier.
Frequently Asked Questions
Which Free Warmly Alternative Has Slack Alerts?
RB2B is the only free tool in this category that delivers visitor alerts directly to Slack at no cost. The alerts fire on company-level identification within the 150-credit monthly cap. The limitation is that the workflow ends at Slack. There is no native CRM push, no enrichment, and no export on the free tier. Every lead requires manual copy-paste to move downstream.
Do Free Visitor Identification Tools Work Outside The US?
Company-level identification generally works in most markets because IP-to-company matching is typically treated as lower-risk under GDPR, as it produces a corporate record rather than a personal profile. Person-level identification is effectively US-only across major person-level tools, because vendors geofence the EU rather than resolve named EU individuals without consent. RB2B explicitly states its person-level product is US-only and does not operate in EU geographies. Leadfeeder identifies companies only, not individuals, and is GDPR-compliant by design. Non-US traffic on any of these tools returns a company name at best and nothing at worst.
What Happens To My Data When I Hit The Free Ceiling?
The answer differs by tool. On RB2B’s free plan, once the 150-credit monthly collection cap is reached, the tracking script is disabled and data collection pauses. Visitors during that pause cannot be retroactively identified, and unused credits expire at the end of the billing cycle and do not carry forward to the next month. Overage credits, which can resume tracking, are an option for paid subscriptions rather than the free plan. On Leadfeeder’s free Lite tier, identified companies older than seven days are no longer accessible regardless of whether you have hit the 100-company cap. The data is not stored for later retrieval on a paid upgrade.
Conclusion: Pick The Free Tool For The One Job You Rely On
Each free alternative to Warmly covers exactly one capability, and each has a dated, hard ceiling:
- Company-Level Deanonymization: Leadfeeder Lite — 100 companies per month, 7-day history (checked September 2026).
- Slack Alerts On Visiting Companies: RB2B — 150 credits per month, company-level only since January 2026, no CRM push (checked September 2026).
None of them replicate Warmly’s orchestration, routing, or person-level identification. When the ceiling is hit, the workflow breaks completely. Know the ceiling before you commit to building a process around it.
When the free tier stops being enough, Coffee becomes the next step. One pixel, named prospects, Suggested Leads matched to your buyer persona, and a full CRM agent handle the workflow from identification to outbound without manual copy-paste.
Turn anonymous visitors into named prospects with Coffee.
