# How to connect Maildroppa to Claude

```json
{
  "title": "How to connect Maildroppa to Claude",
  "toolkit": "Maildroppa",
  "toolkit_slug": "maildroppa",
  "framework": "Claude Cowork",
  "framework_slug": "claude-cowork",
  "url": "https://composio.dev/toolkits/maildroppa/framework/claude-cowork",
  "markdown_url": "https://composio.dev/toolkits/maildroppa/framework/claude-cowork.md",
  "updated_at": "2026-08-28T05:39:19.664Z"
}
```

## 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 Maildroppa account to Claude via Composio Connect, enabling it to send newsletter to recent signups, segment subscribers by recent opens and clicks, create transactional email for password reset, 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 Maildroppa with

- [ChatGPT Work](https://composio.dev/toolkits/maildroppa/framework/chatgpt)
- [Hermes](https://composio.dev/toolkits/maildroppa/framework/hermes-agent)

## Connect Maildroppa to Claude Cowork

### Connecting Maildroppa 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](https://claude.ai/customize/connectors?modal=add-custom-connector&connectorName=Composio&connectorUrl=https%3A%2F%2Fconnect.composio.dev%2Fmcp)
### Add manually
In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.
Click Add custom connector and paste in the Composio MCP server URL:

```bash
https://connect.composio.dev/mcp
```

## What is the Maildroppa MCP server, and what's possible with it?

The Maildroppa MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Maildroppa account. It provides structured and secure access so your agent can perform Maildroppa operations on your behalf.

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `MAILDROPPA_ARCHIVE_TAG` | Archive Tag | Archive one customer-managed tag. Archiving prevents new assignments but preserves existing subscriber assignments and can be reversed by restoring the tag. Use the tag-usage tool first to inspect archive blockers. |
| `MAILDROPPA_COUNT_SEGMENT_SUBSCRIBERS` | Count Segment Subscribers | Return the current number of subscribers matching one stored segment. |
| `MAILDROPPA_CREATE_SEGMENT` | Create Segment | Create a subscriber segment from field, tag, or nested-segment conditions. |
| `MAILDROPPA_CREATE_SUBSCRIBER` | Create Subscriber | Create a subscriber without sending an opt-in message, with optional typed field values and tag assignments. |
| `MAILDROPPA_CREATE_SUBSCRIBERS` | Create Subscribers | Sequentially create 1-25 subscribers without sending opt-in messages. The batch is non-atomic, returns an outcome for every item, and stops after a systemic or ambiguous failure. |
| `MAILDROPPA_CREATE_TAG` | Create Tag | Create a customer-managed tag that can be assigned to subscribers. |
| `MAILDROPPA_DELETE_SEGMENT` | Delete Segment | Permanently delete exactly one stored subscriber segment identified by an explicit segment ID. This action cannot select segments by filter or bulk criteria. |
| `MAILDROPPA_DELETE_SUBSCRIBER` | Delete Subscriber | Permanently delete exactly one subscriber identified by an explicit subscriber ID. This action cannot select subscribers by email, filter, or bulk criteria. |
| `MAILDROPPA_GET_FORM_EMBEDDING` | Get Form Embedding | Return an active Maildroppa form's ordered input-field definition for rendering in a trusted website integration. |
| `MAILDROPPA_GET_SEGMENT` | Get Segment | Return one stored subscriber segment and its complete filter expression by ID. |
| `MAILDROPPA_GET_SUBSCRIBER` | Get Subscriber | Return one Maildroppa subscriber by ID, including display field values, tag IDs, status, registration date, and GDPR agreement. |
| `MAILDROPPA_GET_TAG_USAGE` | Get Tag Usage | Return subscriber assignments and archive or permanent-delete blockers for one Maildroppa tag. |
| `MAILDROPPA_LIST_FORMS` | List Forms | Return signup form overviews with IDs, type, status, publication state, and public routing details. |
| `MAILDROPPA_LIST_RSS_NEWSLETTERS` | List RSS Newsletters | Return the account's RSS newsletter configurations without activating, checking, or sending them. |
| `MAILDROPPA_LIST_RSS_SENDER_PROFILES` | List RSS Sender Profiles | Return sender profiles available to RSS newsletters, including verification and delivery readiness. |
| `MAILDROPPA_LIST_SEGMENTS` | List Segments | Return the account's stored subscriber segments and filter expressions. |
| `MAILDROPPA_LIST_SUBSCRIBER_ACTIVITY` | List Subscriber Activity | Return one page of a subscriber's activity timeline with delivery eligibility and summary counts. |
| `MAILDROPPA_LIST_SUBSCRIBER_FIELDS` | List Subscriber Fields | Return built-in and custom subscriber field definitions, optionally including archived custom fields. |
| `MAILDROPPA_LIST_SUBSCRIBERS` | List Subscribers | Return one page of subscribers, optionally filtered by free text, status, or structured segment conditions. Pass next_cursor back as cursor to continue. |
| `MAILDROPPA_LIST_TAGS` | List Tags | Return account tags, optionally including archived tags. |
| `MAILDROPPA_RESTORE_TAG` | Restore Tag | Restore an archived customer-managed Maildroppa tag so it can be assigned to subscribers again. |
| `MAILDROPPA_UPDATE_SEGMENT` | Update Segment | Replace a segment's name and complete filter expression. This is a full replacement, so supply every condition group that should remain. |
| `MAILDROPPA_UPDATE_TAG` | Update Tag | Rename an existing customer-managed tag. |

## Supported Triggers

None listed.

## Troubleshooting

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

The connector can show as connected, but Claude must use it in each Maildroppa conversation.
- Click + at the lower left of the chat, or type /.
- Hover Connectors.
- Turn on Composio.
- Ask Claude to connect to Maildroppa again.

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

Claude can show Couldn't reach the MCP server or Authorization with the MCP server failed when you add the connector for Maildroppa.
- 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 Maildroppa.
- If it fails again, send the error and the ofid_ reference id to support@composio.dev.

### 3. Why does the Maildroppa authorization link not work?

The Composio connector is one server. Your Maildroppa account connects separately when Claude asks for it.
- If the browser does not open, or the link expires, ask Claude to retry the Maildroppa connection.
- Composio creates a fresh Maildroppa authorization link.
- Open that link in your browser and finish the Maildroppa sign-in.

### 4. Why do Maildroppa actions fail after they worked before?

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

### 5. How do I switch to a different Maildroppa account?

Claude can manage the Maildroppa connection for you.
- Ask Claude to disconnect or delete the current Maildroppa account.
- Ask Claude to connect Maildroppa again.
- Open the new Composio authorization link for Maildroppa.
- Sign in with the other Maildroppa account in the browser.
- After the account connects, ask Claude to retry the Maildroppa task.

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

The connector belongs to your Claude account, so your Maildroppa connection works in Claude Web, Desktop, and Cowork.
- In Claude Desktop, open Customize > Connectors.
- Next to Composio, click ⋮ and click Clear cache.
- If Maildroppa 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 Maildroppa.

## Creating MCP Server - Stand-alone vs Composio SDK

The Maildroppa MCP server connects Claude Web, Desktop, and Cowork to your Maildroppa account through Composio. Once connected, Claude can use the available Maildroppa tools and triggers to complete tasks on your behalf.

## Complete Code

None listed.

## How to build Maildroppa MCP Agent with another framework

- [ChatGPT Work](https://composio.dev/toolkits/maildroppa/framework/chatgpt)
- [Hermes](https://composio.dev/toolkits/maildroppa/framework/hermes-agent)

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## Frequently Asked Questions

### What are the differences in Tool Router MCP and Maildroppa MCP?

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

### Can I use Tool Router MCP with Claude Cowork?

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 Maildroppa tools.

### Can I manage the permissions and scopes for Maildroppa while using Tool Router?

Yes, absolutely. You can configure which Maildroppa 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.

### How safe is my data with Composio Tool Router?

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 Maildroppa data and credentials are handled as safely as possible.

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