Matrix / Cold Email & Outreach / lemlist

lemlist MCP server

Cold Email & Outreach · remote · Not probed · Docs checked 2026-10-16

lemlist has an official hosted MCP server at https://app.lemlist.com/mcp. It uses OAuth 2.1 with PKCE and dynamic client registration, or API key (X-API-Key header) over Streamable HTTP. Agents can use: campaigns & sequences, leads & B2B database search, enrichment (credits).

Works in: ClaudeChatGPTClaude CodeCursor
Access: Read + write
Credits: Some tools use credits
Plan: Email
Useful for: SDRs, AEs, RevOps, Marketing

lemlist MCP endpoint and transport

https://app.lemlist.com/mcp

Transport: Streamable HTTP
Docs: Official lemlist MCP docs

Connect lemlist without code

lemlist's docs confirm it works in Claude and ChatGPT. You don't need a terminal or a config file. Check lemlist's docs first: some vendors give you a personal URL or an API key to use in place of the plain endpoint.

Claude (web and desktop app)

If lemlist shows up when you browse connectors in Claude, connect it from there instead. That skips steps 2 to 4.

In Claude, open Customize → Connectors.
Click + Add, then Add custom connector.
Name it “lemlist”, paste the server URL https://app.lemlist.com/mcp, and click Continue.
Review the sign-in settings Claude detected and click Add.
Click Connect and sign in to lemlist. Then ask Claude something like “What can the lemlist connector do?”

On Team and Enterprise plans, an Owner adds the connector first under Organization settings → Connectors → Add → Custom → Web. Each person then connects it from Customize → Connectors. Free plans can add one custom connector.

Steps from the Claude Help Center: support.claude.com, checked 2026-10-16

ChatGPT

If lemlist has its own plugin in ChatGPT's directory, install that instead.

Go to chatgpt.com/plugins.
Select +, then Add custom MCP server. If you don't see it, your plan or workspace settings may not allow custom servers, so ask your workspace admin.
Enter a name and description. Under Connection, paste the server URL https://app.lemlist.com/mcp.
Set up sign-in, read the warning, and select I understand and want to continue.
Select Create as a plugin. In a new chat, type @ and pick lemlist.

Steps from the OpenAI developer docs: developers.openai.com, checked 2026-10-16

From lemlist's docs: Claude (web, desktop, Cowork) via Customize > Connectors; on Claude Team/Enterprise an Owner adds the custom connector first. ChatGPT web needs developer mode and Business or Enterprise/Edu; Plus/Pro users use the ChatGPT desktop app / Codex route (~/.codex/config.toml).Source: help.lemlist.com, checked 2026-10-16

Developer setup (Claude Code, Cursor)

Add this to .mcp.json (Claude Code, project root) or ~/.cursor/mcp.json (Cursor). Remove the // comment line if your client requires strict JSON.

{
  "mcpServers": {
    "lemlist": {
      "url": "https://app.lemlist.com/mcp"
    }
  }
}

Add the endpoint to your client config (above), or as a custom connector in Claude.
Complete the OAuth sign-in. In Claude Code, run /mcp and pick the server.
Test it with a prompt like: “List the tools the lemlist MCP server exposes.”

lemlist MCP authentication

OAuth 2.1 with PKCE and dynamic client registration, or API key (X-API-Key header)

Use OAuth sign-in for interactive use. For headless runs, use an API key in the X-Api-Key header.

What it can change

Read + write Some lemlist MCP tools change data, not just read it.

Things it can do in your lemlist account:

creates campaigns and adds, edits or removes sequence steps
starts, pauses and archives campaigns
adds, imports, updates and deletes leads
creates and updates CRM contacts, companies and lists
manages unsubscribes
sends messages and replies
configures DNS, purchases domains and provisions/updates mailboxes
connects email accounts
creates and deletes webhooks
runs enrichment (spends credits)

Source: help.lemlist.com, checked 2026-10-16

Review each change before you approve it, especially anything that sends messages or edits records other people rely on.

Cost and credits

Some tools use credits

Enrichment tools (find/verify email, find phone, LinkedIn enrichment, enrich lead/list), Purchase domain, Provision mailbox and Call lemlist API are flagged as consuming lemlist credits; credit amounts depend on enrichment type and plan. Read tools are not flagged.

Source: help.lemlist.com, checked 2026-10-16

Plan required

Email

Source: lemlist.com, checked 2026-10-16

Admin and governance

Controls lemlist itself provides. Settings inside Claude or ChatGPT aren't counted here.

An admin must approve or enable the connectionNot confirmed
Scopes or permissions can limit what it reachesNot confirmed
Individual tools can be turned offNot confirmed
MCP activity shows in an audit logNot confirmed

What the lemlist MCP server can do

campaigns & sequences
leads & B2B database search
enrichment (credits)
CRM contacts, companies & lists
inbox & messaging
analytics & reporting
deliverability & infrastructure (domains, mailboxes, DNS)
account, webhooks & memory

lemlist MCP status

Not probed No hosted endpoint to probe. See all endpoint status.

lemlist MCP FAQ

What is the lemlist MCP server URL?

https://app.lemlist.com/mcp

How does lemlist MCP authenticate?

OAuth 2.1 with PKCE and dynamic client registration, or API key (X-API-Key header).

Does lemlist MCP work with Claude and Cursor?

Any MCP client that supports Streamable HTTP can connect, including Claude Code and Cursor through mcp.json. Add the endpoint and complete the OAuth or API key flow.

Can I use lemlist in Claude or ChatGPT without code?

Yes. lemlist's docs confirm it works in Claude and ChatGPT. Add it as a connector in the app settings and sign in. No terminal or config file needed.

Can the lemlist MCP server change my data?

Yes. Some tools change data, for example: creates campaigns and adds, edits or removes sequence steps, starts, pauses and archives campaigns, adds, imports, updates and deletes leads. Review each change before you approve it.

Does lemlist MCP use credits?

Some tools use credits. Enrichment tools (find/verify email, find phone, LinkedIn enrichment, enrich lead/list), Purchase domain, Provision mailbox and Call lemlist API are flagged as consuming lemlist credits; credit amounts depend on enrichment type and plan. Read tools are not flagged.

What lemlist plan do I need for MCP?

Email.

Is the lemlist MCP server official?

Yes. It's documented on help.lemlist.com, last checked 2026-10-16.