lemlist API
Lemlist ships a public developer portal with an OpenAPI v2 spec, 143 operations, 76 webhook events, and both OAuth 2.1 and API key auth. Signup, pricing, and key generation are self-serve. Main gaps: no documented sandbox and no first party client libraries.
Frequently asked questions
lemlist scores A on the API Report Card. Lemlist ships a public developer portal with an OpenAPI v2 spec, 143 operations, 76 webhook events, and both OAuth 2.1 and API key auth. Signup, pricing, and key generation are self-serve. Main gaps: no documented sandbox and no first party client libraries.
lemlist has a workable official integration path. Most engineering teams can build against it directly. Open API: self-serve, documented, with SDKs
Lemlist is a cloud outbound outreach platform that lets revenue teams build multichannel sequences across email, LinkedIn, and calls, source and enrich contacts from a B2B people database, and manage replies in a unified inbox.
Sales and revenue teams running outbound prospecting, sold to SMB and mid market go to market organizations with an Enterprise tier for larger teams. Teams use lemlist to build and launch multichannel outbound campaigns, push leads into sequences, enrich contacts from the B2B people database, and work replies in the unified inbox.
Lemlist is a well known name in the sales engagement and cold outreach category alongside larger incumbents, though the sourced material published no verified customer counts or market share figures for it.
Campaign and sequence definitions, lead and contact records, company records, enrichment results, reply and conversation history in the unified inbox with messages, drafts, and labels, unsubscribe lists, deliverability alerts, and campaign performance statistics.
The platform is a modern cloud native SaaS product with a versioned REST surface.
Common alternatives include Outreach, Salesloft, Apollo, Amplemarket. Graded alternatives appear under "More from the report card" below.
Grades measure one thing: can a customer's engineering team get their own data out programmatically? We check six things (whether a real API exists, how access is gated, data coverage, auth quality, docs and developer experience, and stability) and roll them into a letter grade. Grades get re-verified, and they only move on evidence.