lemlist
Free tierThe AI Outbound Platform for Relevant Outreach at Every Scale
Paid·All audiences·Powered by Anthropic (Claude)·API available
Key strengths
Multichannel outreach (email, LinkedIn, calls, WhatsApp, SMS)650M+ lead database with email finder & verifierAI-powered outbound with lemAgent, intent signal agents, and data enrichment agentsBuilt-in email deliverability tools including warm-up (lemwarm)500+ integrations including HubSpot, Salesforce, and CRM-native outreachSOC 2 certified security
Paid only · from $55 USD/mo
France
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lemlist — Developer & Integration Docs
lemlist exposes a REST API for developers who need to integrate outbound workflows into their own systems or automate campaign operations programmatically.
Integration surface:
- API: Manage leads, campaigns, sequences, and reporting programmatically
- MCP support: Connect lemlist to AI agent frameworks via the Model Context Protocol
- Native CRM integrations: HubSpot, Salesforce, Attio — enabling CRM-native outreach and bi-directional data sync
- Communication channel integrations: Gmail, LinkedIn, WhatsApp
- Additional integrations: Claap, plus 500+ integrations available through supported connectors
AI & automation layer:
- lemAgent: Autonomous AI agent for outbound execution
- Intent signal agents: Detect and act on buying signals automatically
- Data enrichment agents: Enrich lead records at scale without manual input
Security & compliance:
- SOC 2 certified
Refer to lemlist's official developer documentation for endpoint references, authentication details, webhook configuration, and rate limits.
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