Klaviyo vs Warmly in 2026: eCommerce retention CRM vs enterprise website de-anonymization
Klaviyo knows what a customer bought. Warmly knows who is browsing your website right now, by name, before they have bought anything at all. Both platforms lean on AI agents and real-time data, aimed at almost entirely different businesses.
Klaviyo
Warmly- Klaviyo starts free at $0/month for 250 profiles; Warmly starts at $10,000 per year with no trial, no monthly option, and no self-serve signup.
- Warmly resolves anonymous website visitors to the person level using its Context Graph; Klaviyo has no visitor de-anonymization feature since it works from known, opted-in customers.
- Klaviyo processes 2.5 billion events daily from real customer purchase and engagement history; Warmly's Context Graph unifies site visits, CRM data, and chat logs for accounts with no prior relationship.
- Warmly customers report replacing $20,000 to $40,000 per month SDR agency spend with the platform; Klaviyo has no B2B sales or SDR replacement use case at all.
- Klaviyo's Customer Agent resolves 65% of support questions autonomously for existing customers; Warmly's AI agents handle inbound chat and outbound engagement for anonymous visitors instead.
- Warmly's full AI Inbound Autopilot tier costs $30,000 per year, with additional $10,000/year add-ons for GTM Signals and Warm Experiences; Klaviyo's top self-serve tier is roughly $35/month for Email + SMS.
Klaviyo and Warmly both describe themselves in terms of real-time data and autonomous AI agents, and both are genuinely ambitious pieces of technology, but the similarity mostly ends there. Klaviyo runs a B2C CRM with a built-in CDP processing 2.5 billion events daily, entirely focused on retaining and growing revenue from customers who have already engaged. Warmly identifies anonymous B2B website visitors at the person level, then deploys AI agents to engage them across chat, email, and ads before any relationship exists, starting at $10,000 per year with no self-serve option. One is accessible to a solo Shopify founder; the other requires enterprise budget approval. The overlap in use case is close to zero.
The tools at a glance
Klaviyo
The autonomous B2C CRM unifying customer data, AI agents, and omnichannel campaigns in one platform.
Klaviyo's entire model assumes the customer relationship already exists and has real data attached to it. The Klaviyo Data Platform unifies behavioral, transactional, and engagement data in real time across 7.3 billion profiles, letting a cart abandonment or repeat purchase trigger the right flow the moment it happens rather than on a delay.
K:AI's Marketing Agent and Customer Agent both operate on that real customer history, drafting campaigns and resolving 65% of support questions autonomously. None of this requires identifying an anonymous visitor, because Klaviyo's customers have already given up their contact information through a purchase or signup.
For a retailer or subscription brand, Klaviyo's free entry tier and deep Shopify integration are hard to match. It has no equivalent to Warmly's enterprise visitor-identification layer, and honestly does not need one for the audience it serves.
| Feature | Free $0/mo | Email From ~$20/mo | Email + SMS From ~$35/mo | Enterprise Custom |
|---|---|---|---|---|
| Active Profiles | 250 | Scales by list size | Scales by list size | Custom |
| Built-in CDP | ✓ | ✓ | ✓ | ✓ |
| Marketing Agent (K:AI) | ✓ | ✓ | ✓ | ✓ |
| Website visitor de-anonymization | ✗ | ✗ | ✗ | ✗ |
| MCP Server Access | ✓ | ✓ | ✓ | ✓ |
Warmly
AI agents de-anonymize website visitors at the person level and autonomously run inbound and outbound GTM across chat, email, and ads.
Warmly starts where Klaviyo's data ends: an anonymous visitor with no known identity. Its de-anonymization layer cross-references first-party tracking against an identity graph to resolve visitors to the person level, not just the company, which most competing tools stop at.
The Context Graph unifies every signal across an account, site visits, emails, CRM activity, call transcripts, and chat logs, into one real-time view, and AI agents consult it before every action: when to reach out, what channel, what message. This is a genuinely different technical approach than a rules-based chatbot, and the reported benchmarks (3x more qualified pipeline, first meeting in hours) reflect real enterprise deployments, not aspirational marketing copy.
The price floor is the defining constraint: $10,000 per year for the entry tier, scaling to $30,000 for full inbound autopilot, plus $10,000/year add-ons for GTM Signals and Warm Experiences. There is no trial, no self-serve signup, and no monthly option, making Warmly a considered enterprise purchase rather than something a small team tries casually.
| Feature | AI Web-Deanonymization From $10,000/year | Inbound Chat From $20,000/year | AI Inbound Autopilot From $30,000/year |
|---|---|---|---|
| Person-level visitor ID | ✓ | ✓ | ✓ |
| AI chatbot (1 Agent) | ✗ | ✓ | ✓ |
| Unlimited AI Studio Agents | ✗ | ✗ | ✓ |
| Autonomous qualification + goals | ✗ | ✗ | ✓ |
| CRM sync | ✓ | ✓ | ✓ |
Head-to-head feature comparison
| Feature | Klaviyo | Warmly |
|---|---|---|
| Primary function | B2C retention and lifecycle marketing | B2B website intelligence and GTM automation |
| Recipient relationship | Opted-in, known customers | Anonymous visitors, no prior relationship |
| Website visitor de-anonymization | No, not applicable | Yes, person-level identification |
| Behavioral CDP | Yes, native, real-time, 2.5B events/day | No, uses a Context Graph instead |
| Free tier / self-serve | Yes, genuine $0/month free plan | No, sales-led, annual contract only |
| AI agent autonomy | Marketing and support agents on known data | Inbound and outbound agents on anonymous traffic |
| Support / helpdesk AI for customers | Yes (Customer Agent, 65% autonomous) | No |
| Ad retargeting (LinkedIn, Meta) | No | Yes |
| Minimum realistic budget | Under $50/month for most small merchants | $10,000/year minimum |
| Target company size | Small to enterprise eCommerce and B2C | Mid-market and enterprise B2B |
| Starting price | $0/mo | $10,000/year |
Which should you choose?
KlaviyoWarmlyKlaviyoWarmlyKlaviyoWarmlyThe price floors alone tell most of the story: Klaviyo is free to start and Warmly requires a five-figure annual commitment before you send a single message. That gap exists because they solve entirely different problems. Klaviyo has nothing to say about the anonymous visitor browsing your site right now; Warmly has nothing to say about the customer who bought from you last week and might churn without a win-back flow. Neither is overpriced or underpowered for its actual job, they are simply not aimed at the same buyer.
Bottom line
Choose Klaviyo if your business already has customers and your job is retaining and growing them through behavioral automation. Choose Warmly only if you are a mid-market or enterprise B2B company with real website traffic, budget starting at $10,000 per year, and a genuine need to identify and engage anonymous visitors before they ever fill out a form. Do not evaluate Warmly on a tight budget expecting a lighter self-serve tier to appear, none is published.
Frequently asked questions
Can Klaviyo identify anonymous website visitors like Warmly does?
No, Klaviyo has no website de-anonymization feature. Its data model works entirely from known customers who have opted in, purchased, or otherwise identified themselves, it does not attempt to resolve the identity of an anonymous browser. Warmly is purpose-built specifically for that problem.
Is Warmly worth the $10,000 per year minimum for a small business?
Almost certainly not. Warmly is built for mid-market and enterprise B2B companies with meaningful website traffic, and the ROI case depends on volume: Warmly does not publish a traffic threshold, but a site with only a few hundred monthly B2B visitors will see limited value from the de-anonymization layer. Smaller teams should look at lighter visitor identification tools before considering Warmly.
Does Klaviyo replace the need for a tool like Warmly if I already use Klaviyo for retention?
No, they solve different problems entirely. Klaviyo retains and grows revenue from customers who already have a relationship with the brand. Warmly identifies and engages anonymous visitors who have not yet become customers or even filled out a form. A B2B company could reasonably use Warmly for top-of-funnel engagement and a retention tool for existing accounts afterward.
How does Warmly's pricing compare to hiring an SDR agency?
Warmly customers report replacing $20,000 to $40,000 per month in SDR agency spend with the platform, which at the $10,000 to $30,000 per year tiers can represent meaningful savings if the person-level identification and AI engagement genuinely convert at similar or better rates. This is the core ROI argument Warmly makes to justify its price floor.
Is there a free trial for Warmly the way there is for Klaviyo?
No. Warmly has no free trial, free tier, or self-serve signup, every plan starts at $10,000 per year and requires a sales conversation. Klaviyo, by contrast, has a genuine $0/month free plan for up to 250 profiles that requires no sales call at all.
Which tool makes more sense for a B2B SaaS company with an eCommerce-style motion?
It depends on where the gap actually is. If the company has real website traffic converting poorly because visitors are anonymous, Warmly addresses that specific problem, assuming the budget supports it. If the company has known trial users or customers it is failing to retain, that is a Klaviyo-style retention problem, though for pure B2B SaaS lifecycle needs a tool like Userlist or Ortto would likely fit better than Klaviyo.