Propensity vs Warmly

Propensity is a contact-level marketing platform for B2B growth teams running account-based marketing, demand generation, media, or sales campaigns. It identifies website visitors, the campaigns that brought them to a site, and their engagement for sales activation. Audiences can be built with industry, role, technology-stack, and behavior filters, alongside contact-level intent data. Propensity says contacts are verified for accuracy, role, and intent before entering a customer CRM. Campaigns span more than 20 channels, including display, social, direct mail, email, and connected TV. Salesforce and HubSpot integrations are listed, as are Google Ads, YouTube, LinkedIn, Facebook, Instagram, Gmail, Slack, Outlook 365, and Salesloft. The API creates and updates audiences programmatically and retrieves engagement data for contacts and accounts. Essential costs $2,000/mo, Strategic $3,000/mo, and Unlimited $4,000/mo. A free intent-data sample returns up to 100 in-market accounts and 100 contacts at those accounts. A free trial is advertised without a stated duration.

Warmly describes itself as an autonomous revenue agent platform for B2B go-to-market teams. Its Inbound Agent identifies website visitors at the person level and offers AI chat with Context Graph context, intent-based popups, and personalized microsites. The platform also lists company and people search, intent signals, phone numbers, and an email finder. Integrations include HubSpot, Salesforce, Close.io, Zoho, and Pipedrive, as well as Slack and Microsoft Teams notifications. Warmly provides an MCP server with OAuth access and REST endpoints authenticated by API key; its three tools are read-only. API and MCP credits are shared across the product, and new visitor identifications pause when the monthly credit pool runs out. The free API/MCP plan is free and includes 250 credits per month; paid API/MCP plans start at $99 a month. Annual web-deanonymization starts at $10,000 a year, Inbound Chat at $20,000 a year, and AI Inbound Autopilot at $30,000 a year, each from 10K credits per month. Warmly runs on the web and through an API, and is headquartered in San Francisco.