Instantly vs lemlist MCP servers
Both Instantly and lemlist have official MCP servers. Instantly's server works in Claude and Cursor. It can change data. Its credit use isn't confirmed. lemlist's server works in Claude, ChatGPT, Claude Code and Cursor. It can change data. It uses credits on some tools.
This page sets the facts side by side, each with its vendor source. It doesn't pick a winner: the right one is usually the tool your team already pays for.
How do the Instantly and lemlist MCP servers compare?
| Fact | Instantly | lemlist |
|---|---|---|
| Category | Cold Email & Outreach | Cold Email & Outreach |
| Hosted endpoint | https://mcp.instantly.ai/mcp | https://app.lemlist.com/mcp |
| Auth | API key (Authorization header or URL path) | OAuth 2.1 with PKCE and dynamic client registration, or API key (X-API-Key header) |
| Works in Claude | YesSource: developer.instantly.ai, checked 2026-10-16 | YesSource: help.lemlist.com, checked 2026-10-16 |
| Works in ChatGPT | Not confirmed | YesSource: help.lemlist.com, checked 2026-10-16 |
| Works in Claude Code | Not confirmed | YesSource: help.lemlist.com, checked 2026-10-16 |
| Works in Cursor | YesSource: developer.instantly.ai, checked 2026-10-16 | YesSource: help.lemlist.com, checked 2026-10-16 |
| Works in GitHub Copilot | Not confirmed | Not confirmed |
| What it can change | Read + write creates, updates, activates and pauses campaigns; adds, moves and merges leads; manages lead lists and labels; replies to and forwards emails; manages sending accounts (warmup, pause, resume) and 4 moreSource: developer.instantly.ai, checked 2026-10-16 | Read + write 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 and 6 moreSource: help.lemlist.com, checked 2026-10-16 |
| Credits | Credits not confirmed | 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 | Growth (first plan with API access)Source: help.instantly.ai, checked 2026-10-16 | EmailSource: lemlist.com, checked 2026-10-16 |
| Setup | Self-serveSource: developer.instantly.ai, checked 2026-10-16 | Self-serveSource: help.lemlist.com, checked 2026-10-16 |
| An admin must approve or enable the connection | Not confirmed | Not confirmed |
| Scopes or permissions can limit what it reaches | YesSource: developer.instantly.ai, checked 2026-10-16 | Not confirmed |
| Individual tools can be turned off | Not confirmed | Not confirmed |
| MCP activity shows in an audit log | Not confirmed | Not confirmed |
| Endpoint status | Up · auth | Up · auth |
| Last verified | 2026-10-15 | 2026-10-16 |
| Official docs | help.instantly.ai | help.lemlist.com |
"Not confirmed" means the vendor's docs don't settle the question. It doesn't mean no.
What can each server do?
- Instantly: campaigns, leads, email ops, analytics, sending accounts (31 tools)
- lemlist: campaigns & sequences, leads & B2B database search, enrichment (credits), CRM contacts, companies & lists, inbox & messaging, analytics & reporting, deliverability & infrastructure (domains, mailboxes, DNS), account, webhooks & memory
Which recipes use Instantly or lemlist?
- Research a prospect, then add them to an Instantly campaign (Perplexity + Apollo + Instantly)
- Book meetings from replies (Instantly + Calendly + HubSpot)
- Sequence cleanup: tag bounces and 'not me' replies, then find replacement contacts (Instantly + Prospeo)
- Hiring for the problem you solve: turn job posts into first lines and a lemlist campaign (PredictLeads + Apollo + lemlist)
- Event follow-up within 24 hours: enrich the attendee list, tier it and load tiered follow-ups (Airtable + Apollo + lemlist)
More outreach and sales engagement tools: see the full list.