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How to connect Enginemailer to Claude

Connect Claude Web, Desktop and Cowork to Enginemailer MCP. Add new subscriber to newsletter list, pause tomorrow's scheduled marketing campaign, and more using natural language, with authentication handled for you.

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Enginemailer is an email marketing platform for managing contacts, campaigns, and sending personalized emails. It helps businesses automate outreach and boost engagement with targeted messaging.

38 Tools

Introduction

Claude is Anthropic's AI assistant, available on the web, in the desktop app, and on mobile. Cowork is its agent for knowledge work, and it runs on all of those surfaces too. Connected to your apps, Claude can work with your files and services to accomplish complex tasks on your behalf.

This guide walks you through the easiest and most secure way to connect your Enginemailer account to Claude via Composio Connect, enabling it to add new subscriber to newsletter list, pause tomorrow's scheduled marketing campaign, export email delivery report from last week, and more such actions on your behalf without compromising your account security.

Setup is the same on Claude Web, Desktop, and Cowork, and you only need to do it once. The connector is tied to your account, so it's available in all three.

Also integrate Enginemailer with

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Connecting Enginemailer to Claude Web, Desktop, and Cowork

Two ways to add the Composio connector. Pick whichever you prefer.

1. Add with one click

Click the button. Claude opens with the Composio connector filled in. Click Add, then go to step 2.

Add to Claude

Add manually

In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.

Claude Desktop connectors screen with Add custom connector selected

Click Add custom connector and paste in the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
Add custom connector dialog with Composio MCP server URL

2. Authorize in your browser

Click Connect. You'll be redirected to a browser window where you can authorize Composio to continue.

Composio authorization screen for Claude Web, Desktop, and Cowork

3. Connect your Enginemailer account

Back in Claude, ask it to connect to Enginemailer or give it any Enginemailer-related task.

For example, ask Claude to:

  • "Add new subscriber to newsletter list"
  • "Pause tomorrow's scheduled marketing campaign"
  • "Export email delivery report from last week"

It will prompt you to authenticate and authorize access.

That's it. Composio's tools are now available in Claude, and your Enginemailer account is ready to use.

What is the Enginemailer Claude Connector, and what's possible with it?

The Enginemailer MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Enginemailer account. It provides structured and secure access to your email marketing platform, so your agent can perform actions like creating campaigns, managing subscriber lists, exporting reports, and sending personalized email campaigns on your behalf.

  • Campaign creation and scheduling: Direct your agent to set up new email campaigns, configure content, and schedule delivery to your audience.
  • Subscriber management: Have your agent add new subscribers to your lists, including custom fields and segmentation for targeted outreach.
  • Instant campaign delivery and controls: Command your agent to send campaigns immediately or pause scheduled campaigns for last-minute adjustments.
  • Campaign monitoring and reporting: Let your agent export detailed email campaign reports as CSV files and check the status of ongoing exports.
  • Audience segmentation and subcategory retrieval: Guide your agent to fetch subcategories and organize recipients for more personalized and effective campaigns.

Troubleshooting

1. Why does Claude not use the Composio connector for Enginemailer?

The connector can show as connected, but Claude must use it in each Enginemailer conversation.

  • Click + at the lower left of the chat, or type /.
  • Hover Connectors.
  • Turn on Composio.
  • Ask Claude to connect to Enginemailer again.

2. Why does Claude show an MCP server error before Enginemailer connects?

Claude can show Couldn't reach the MCP server or Authorization with the MCP server failed when you add the connector for Enginemailer.

  • Check that the connector URL is https://connect.composio.dev/mcp.
  • Connectors run from Anthropic's cloud, so your device network is usually not the problem.
  • Add the connector again from Customize > Connectors, then ask Claude to connect Enginemailer.
  • If it fails again, send the error and the ofid_ reference id to support@composio.dev.

3. Why does the Enginemailer authorization link not work?

The Composio connector is one server. Your Enginemailer account connects separately when Claude asks for it.

  • If the browser does not open, or the link expires, ask Claude to retry the Enginemailer connection.
  • Composio creates a fresh Enginemailer authorization link.
  • Open that link in your browser and finish the Enginemailer sign-in.

4. Why do Enginemailer actions fail after they worked before?

The Enginemailer connection can expire or lose permission.

  • Ask Claude to inspect the Enginemailer connection.
  • If the connection is unhealthy, disconnect it when Claude prompts you.
  • Reconnect the Enginemailer account and retry the action.
  • If Claude shows a permission prompt, approve it before Claude changes data in Enginemailer.
  • If the action still fails with a permission error, check that the connected account has that permission in Enginemailer itself.

5. How do I switch to a different Enginemailer account?

Claude can manage the Enginemailer connection for you.

  • Ask Claude to disconnect or delete the current Enginemailer account.
  • Ask Claude to connect Enginemailer again.
  • Open the new Composio authorization link for Enginemailer.
  • Sign in with the other Enginemailer account in the browser.
  • After the account connects, ask Claude to retry the Enginemailer task.

6. Why is my Enginemailer connection missing in Claude Desktop or on a Team plan?

The connector belongs to your Claude account, so your Enginemailer connection works in Claude Web, Desktop, and Cowork.

  • In Claude Desktop, open Customize > Connectors.
  • Next to Composio, click ⋮ and click Clear cache.
  • If Enginemailer tools still do not appear, click ⋮, disconnect, remove the connector, and add it again.
  • On Team or Enterprise, an Owner or Primary Owner must enable the connector before you can connect Enginemailer.
TOOLS

Supported Tools

Every Enginemailer action and event your agent gets out of the box.

Activate Subscriber

Tool to activate an inactive subscriber in EngineMailer.

Add or Update Subscriber

Tool to add or update a subscriber with custom fields via N8N integration.

Check Batch Update Status

Tool to check the status of a batch subscriber update operation.

Batch Update Subscribers

Tool to add or update multiple subscribers with custom fields in a single batch operation.

Check Export Status V2

Tool to check status of a previously requested CSV report export.

Test API Connection

Tool to test API connection and verify authentication.

Create Campaign

Tool to create a new email campaign.

Delete Campaign

Tool to delete an undelivered email campaign.

Delete Recipient List

Tool to delete an existing recipient list from a targeted campaign.

Delete Subscriber

Tool to remove a subscriber from the system by email address.

Export CSV Report V2

Tool to export a transactional email report as CSV.

Find Subscriber

Tool to find a subscriber by email address via N8N integration.

Get Custom Field List

Tool to retrieve the list of custom fields configured for subscribers.

Get List Campaign

Tool to get a list of undelivered campaigns.

Get New Subscribers

Tool to retrieve new subscribers with optional filtering by source, form, page, or popup.

Get Subcategories

Tool to retrieve subcategories for a given category.

Get Subscriber

Tool to retrieve subscriber information by email address.

Get Subscriber Autoresponder Completed

Tool to retrieve subscribers who completed autoresponders with optional filtering by autoresponder ID.

Get Subscriber Autoresponder Triggered

Tool to retrieve subscribers who triggered autoresponders with optional filtering by autoresponder ID.

Get Deleted Subscribers

Tool to retrieve deleted subscribers since last polling date.

Get Subscribers Modified

Tool to retrieve modified subscribers since last polling date with optional limit.

Get Subscribers Tagged

Tool to retrieve subscribers who were tagged with optional filtering by subcategory.

Get Untagged Subscribers

Tool to retrieve subscribers who were untagged from subcategories.

Get Unsubscribe Events

Tool to retrieve unsubscribe events with optional filtering by campaign or autoresponder.

Insert Subscriber

Tool to add a new subscriber with optional custom fields.

List Autoresponders

Tool to retrieve a list of all autoresponders.

List Campaigns

Tool to retrieve a list of all campaigns.

List Forms

Tool to retrieve a list of available forms in Enginemailer.

List Pages

Tool to retrieve a list of all pages.

List Popups

Tool to retrieve a list of popups from Enginemailer.

List Templates

Tool to retrieve a list of all email templates.

Pause Campaign

Tool to pause a scheduled email campaign.

Create/Update Category

Tool to create or update a category for subscriber segmentation.

Update Subscriber

Tool to update data for an existing subscriber in EngineMailer.

Send Campaign

Tool to send an email campaign immediately.

Tag Subscriber to Subcategory

Tool to tag a subscriber to a specific subcategory via N8N API endpoint.

Unsubscribe (N8N)

Tool to unsubscribe a subscriber via N8N API endpoint.

Unsubscribe Subscriber

Tool to unsubscribe a subscriber from the email list.

FRAMEWORKS

How to build Enginemailer MCP Agent with another framework

Claude Code logo

Claude Code

Use Enginemailer MCP with Claude Code

OpenAI Agents SDK logo

OpenAI Agents SDK

Use Enginemailer MCP with OpenAI Agents SDK

Claude Agent SDK logo

Claude Agent SDK

Use Enginemailer MCP with Claude Agent SDK

Codex logo

Codex

Use Enginemailer MCP with Codex

OpenClaw logo

OpenClaw

Use Enginemailer MCP with OpenClaw

Hermes logo

Hermes

Use Enginemailer MCP with Hermes

Atomic Agent logo

Atomic Agent

Use Enginemailer MCP with Atomic Agent

Google ADK logo

Google ADK

Use Enginemailer MCP with Google ADK

LangChain logo

LangChain

Use Enginemailer MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Enginemailer MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Enginemailer MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Enginemailer MCP with LlamaIndex

CrewAI logo

CrewAI

Use Enginemailer MCP with CrewAI

Pydantic AI logo

Pydantic AI

Use Enginemailer MCP with Pydantic AI

AutoGen logo

AutoGen

Use Enginemailer MCP with AutoGen

FAQ

Frequently asked questions

With a standalone Enginemailer MCP server, the agents and LLMs can only access a fixed set of Enginemailer tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Enginemailer and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. Claude Cowork fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Enginemailer tools.

Yes, absolutely. You can configure which Enginemailer scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Enginemailer data and credentials are handled as safely as possible.

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