# How to connect Emailoctopus to Claude Cowork ```json { "title": "How to connect Emailoctopus to Claude Cowork", "toolkit": "Emailoctopus", "toolkit_slug": "emailoctopus", "framework": "Claude Cowork", "framework_slug": "claude-cowork", "url": "https://composio.dev/toolkits/emailoctopus/framework/claude-cowork", "markdown_url": "https://composio.dev/toolkits/emailoctopus/framework/claude-cowork.md", "updated_at": "2026-05-12T10:10:16.645Z" } ``` ## Introduction Cowork is Anthropic's AI agent for knowledge work. Think of it as Claude Code for everything else. It works autonomously with your computer, local files, and applications to accomplish complex tasks. This guide walks you through the easiest and most secure way to connect your Emailoctopus account to Cowork via Composio Connect, enabling it to add new subscribers to your newsletter list, unsubscribe a user from marketing emails, list all recent email campaigns sent, and more such actions on your behalf without compromising your account security. ## Also integrate Emailoctopus with - [OpenAI Agents SDK](https://composio.dev/toolkits/emailoctopus/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/emailoctopus/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/emailoctopus/framework/claude-code) - [Codex](https://composio.dev/toolkits/emailoctopus/framework/codex) - [OpenClaw](https://composio.dev/toolkits/emailoctopus/framework/openclaw) - [Hermes](https://composio.dev/toolkits/emailoctopus/framework/hermes-agent) - [CLI](https://composio.dev/toolkits/emailoctopus/framework/cli) - [Google ADK](https://composio.dev/toolkits/emailoctopus/framework/google-adk) - [LangChain](https://composio.dev/toolkits/emailoctopus/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/emailoctopus/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/emailoctopus/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/emailoctopus/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/emailoctopus/framework/crew-ai) ## Connect Emailoctopus to Claude Cowork ### Connecting Emailoctopus to Claude Cowork 1. Open Customize In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top. 2. Add the Composio MCP server Click Add custom connector and paste in the Composio MCP server URL: ```bash https://connect.composio.dev/mcp ``` ## What is Claude Cowork? Claude Cowork is Anthropic's agent for general knowledge work. It can use your computer, files, and connected applications to complete longer-running tasks across your work tools. With Composio Connect, Cowork can securely access apps like Emailoctopus through MCP without you sharing account credentials directly with the agent. ## What is the Emailoctopus MCP server, and what's possible with it? The Emailoctopus MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Emailoctopus account. It provides structured and secure access to your subscriber lists, contacts, and campaigns, so your agent can perform actions like managing lists, adding contacts, launching campaigns, and handling unsubscriptions on your behalf. - Seamless contact management: Your agent can create new contacts, update details, or remove subscribers from your marketing lists in seconds. - Mailing list creation and organization: Effortlessly set up new mailing lists and keep your audience segmented for targeted campaigns. - Campaign insights and retrieval: Instantly access details about your recent email campaigns, including summaries and performance data. - Automated unsubscriptions and compliance: Quickly unsubscribe contacts or delete them to keep your lists clean and privacy-compliant. - Bulk list management: Retrieve and organize all mailing lists in your account, making it easy to scale and update your marketing efforts. ## Supported Tools | Tool slug | Name | Description | |---|---|---| | `EMAILOCTOPUS_CREATE_CONTACT` | Create Contact | This tool creates a new contact in EmailOctopus. The tool will add a contact to a specified list with the provided information. | | `EMAILOCTOPUS_CREATE_FIELD` | Create Field | Tool to create a new custom field on an EmailOctopus mailing list. Use when you need to add additional data fields beyond the default Email, First Name, and Last Name fields. | | `EMAILOCTOPUS_CREATE_LIST` | Create List | Creates a new mailing list in EmailOctopus for organizing and managing email contacts. The list is created with default fields (Email address, First name, Last name) and can be used to add contacts, send campaigns, and track subscriber engagement. | | `EMAILOCTOPUS_CREATE_TAG` | Create Tag | Tool to create a new tag on an EmailOctopus mailing list. Use when you need to add a new tag for contact segmentation and filtering purposes. | | `EMAILOCTOPUS_DELETE_CONTACT` | Delete Contact | Permanently deletes a contact from a specified EmailOctopus list. This action is irreversible - once deleted, the contact and all associated data will be removed from the list. Use this for list management, honoring deletion requests, and data privacy compliance (e.g., GDPR right to erasure). | | `EMAILOCTOPUS_DELETE_FIELD` | Delete Field | Permanently deletes a custom field from a specified EmailOctopus list. This action is irreversible - once deleted, the field and all associated data will be removed from the list. Use this for list customization and field management. | | `EMAILOCTOPUS_DELETE_LIST` | Delete List | This tool allows you to delete an existing mailing list from your EmailOctopus account. Once a list is deleted, it cannot be recovered, and all contacts within the list will be permanently removed. Note: Lists can only be deleted if no contacts within the list have received an email in the last 7 days. | | `EMAILOCTOPUS_DELETE_TAG` | Delete Tag | Tool to delete a tag from a mailing list in EmailOctopus. Use when you need to remove an existing tag that is no longer needed for contact organization or segmentation. | | `EMAILOCTOPUS_GET_ALL_LISTS` | Get All Lists | This tool retrieves all the mailing lists associated with the EmailOctopus account. | | `EMAILOCTOPUS_GET_CONTACT` | Get Contact | Tool to retrieve details of a specific contact from an EmailOctopus list. Use when you need to fetch contact information including email, fields, tags, and subscription status. | | `EMAILOCTOPUS_GET_LIST` | Get List | Retrieves details of a specific mailing list by ID. Use when you need to fetch list information, including its name, fields, tags, contact counts, and opt-in settings. | | `EMAILOCTOPUS_GET_RECENT_CAMPAIGNS` | Get Recent Campaigns | This tool retrieves a list of recent campaigns from the EmailOctopus account. | | `EMAILOCTOPUS_LIST_CONTACTS` | List Contacts | Tool to retrieve contacts from an EmailOctopus list. Returns a paginated list of contacts with optional filtering by tag, status, and date ranges. | | `EMAILOCTOPUS_LIST_TAGS` | List Tags | Tool to retrieve all tags from a mailing list. Use when you need to see what tags are available on a specific list for contact segmentation. | | `EMAILOCTOPUS_UNSUBSCRIBE_CONTACT` | Unsubscribe Contact | Unsubscribes a contact from an EmailOctopus mailing list. This tool updates the contact's subscription status to 'unsubscribed', which stops them from receiving future emails from the specified list. The contact record is preserved but marked as unsubscribed. | | `EMAILOCTOPUS_UPDATE_CONTACTS_BATCH` | Batch Update Contacts | Tool to update multiple contacts in an EmailOctopus list in a single batch operation. Use when you need to efficiently update multiple contacts at once with changes to their email, fields, status, or tags. | | `EMAILOCTOPUS_UPDATE_FIELD` | Update Field | Updates an existing custom field on an EmailOctopus list including its label, tag, type, and fallback value. Use this action to modify field properties or rename field tags. Note that changing the tag will affect how the field is referenced in email templates. | | `EMAILOCTOPUS_UPDATE_LIST` | Update List | Tool to update an existing mailing list's name in EmailOctopus. Use when you need to rename a list. | | `EMAILOCTOPUS_UPDATE_TAG` | Update Tag | Tool to update an existing tag on a mailing list. Use when you need to rename a tag. | | `EMAILOCTOPUS_UPSERT_CONTACT` | Create or Update Contact | Tool to create or update a contact in EmailOctopus. If the contact does not exist, it will be created. If the contact already exists, it will be updated. Use when you need to ensure a contact exists with specific information regardless of whether they're already in the list. | ## Supported Triggers None listed. ## Creating MCP Server - Stand-alone vs Composio SDK The Emailoctopus MCP server connects Claude Cowork to your Emailoctopus account through Composio. Once connected, Cowork can use the available Emailoctopus tools and triggers to complete tasks on your behalf. ## Complete Code None listed. ## How to build Emailoctopus MCP Agent with another framework - [OpenAI Agents SDK](https://composio.dev/toolkits/emailoctopus/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/emailoctopus/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/emailoctopus/framework/claude-code) - [Codex](https://composio.dev/toolkits/emailoctopus/framework/codex) - [OpenClaw](https://composio.dev/toolkits/emailoctopus/framework/openclaw) - [Hermes](https://composio.dev/toolkits/emailoctopus/framework/hermes-agent) - [CLI](https://composio.dev/toolkits/emailoctopus/framework/cli) - [Google ADK](https://composio.dev/toolkits/emailoctopus/framework/google-adk) - [LangChain](https://composio.dev/toolkits/emailoctopus/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/emailoctopus/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/emailoctopus/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/emailoctopus/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/emailoctopus/framework/crew-ai) ## Related Toolkits - [Reddit](https://composio.dev/toolkits/reddit) - Reddit is a social news platform with thriving user-driven communities (subreddits). 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It helps companies boost user engagement by sharing news where users are most active. - [Benchmark email](https://composio.dev/toolkits/benchmark_email) - Benchmark Email is a platform for creating, sending, and tracking email campaigns. It's built to help you engage audiences and analyze results—all in one place. - [Bigmailer](https://composio.dev/toolkits/bigmailer) - BigMailer is an email marketing platform for managing multiple brands with white-labeling and automation. It helps teams streamline campaigns and simplify integration with Amazon SES. - [Brandfetch](https://composio.dev/toolkits/brandfetch) - Brandfetch is an API that delivers company logos, colors, and visual branding assets. It helps marketers and developers keep brand visuals consistent everywhere. - [Brevo](https://composio.dev/toolkits/brevo) - Brevo is an all-in-one email and SMS marketing platform for transactional messaging, automation, and CRM. 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It helps teams engage audiences and optimize lead generation through detailed analytics. ## Frequently Asked Questions ### What are the differences in Tool Router MCP and Emailoctopus MCP? With a standalone Emailoctopus MCP server, the agents and LLMs can only access a fixed set of Emailoctopus tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Emailoctopus 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 Emailoctopus tools. ### Can I manage the permissions and scopes for Emailoctopus while using Tool Router? Yes, absolutely. You can configure which Emailoctopus 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 Emailoctopus data and credentials are handled as safely as possible. --- [See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)