# How to connect Smtp2go to Claude Cowork

```json
{
  "title": "How to connect Smtp2go to Claude Cowork",
  "toolkit": "Smtp2go",
  "toolkit_slug": "smtp2go",
  "framework": "Claude Cowork",
  "framework_slug": "claude-cowork",
  "url": "https://composio.dev/toolkits/smtp2go/framework/claude-cowork",
  "markdown_url": "https://composio.dev/toolkits/smtp2go/framework/claude-cowork.md",
  "updated_at": "2026-05-12T10:26:39.030Z"
}
```

## 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 Smtp2go account to Cowork via Composio Connect, enabling it to search for bounced emails this week, add marketing@mydomain.com as allowed sender, list all verified sender domains, and more such actions on your behalf without compromising your account security.

## Also integrate Smtp2go with

- [OpenAI Agents SDK](https://composio.dev/toolkits/smtp2go/framework/open-ai-agents-sdk)
- [Claude Agent SDK](https://composio.dev/toolkits/smtp2go/framework/claude-agents-sdk)
- [Claude Code](https://composio.dev/toolkits/smtp2go/framework/claude-code)
- [Codex](https://composio.dev/toolkits/smtp2go/framework/codex)
- [OpenClaw](https://composio.dev/toolkits/smtp2go/framework/openclaw)
- [Hermes](https://composio.dev/toolkits/smtp2go/framework/hermes-agent)
- [CLI](https://composio.dev/toolkits/smtp2go/framework/cli)
- [Google ADK](https://composio.dev/toolkits/smtp2go/framework/google-adk)
- [LangChain](https://composio.dev/toolkits/smtp2go/framework/langchain)
- [Vercel AI SDK](https://composio.dev/toolkits/smtp2go/framework/ai-sdk)
- [Mastra AI](https://composio.dev/toolkits/smtp2go/framework/mastra-ai)
- [LlamaIndex](https://composio.dev/toolkits/smtp2go/framework/llama-index)
- [CrewAI](https://composio.dev/toolkits/smtp2go/framework/crew-ai)

## Connect Smtp2go to Claude Cowork

### Connecting Smtp2go 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 Smtp2go through MCP without you sharing account credentials directly with the agent.

## What is the Smtp2go MCP server, and what's possible with it?

The Smtp2go MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Smtp2go account. It provides structured and secure access to your email sending and management infrastructure, so your agent can perform actions like searching email activity, managing allowed senders, updating sender domains, and controlling IP allow lists on your behalf.
- Comprehensive email activity search: Ask your agent to filter and retrieve email events such as sends, opens, clicks, and bounces by recipient, date, or message ID.
- Allowed sender management: Have your agent add, update, remove, or view allowed sender email addresses to control who can send emails from your account.
- Sender domain configuration: Let the agent register new sender domains for SPF/DKIM verification and manage domain-related settings seamlessly.
- IP allow list control: Direct your agent to add or remove IP addresses or CIDR ranges in your account’s IP allow list, enhancing security for sending sources.
- Email delivery monitoring: Enable your agent to search and analyze sent emails, helping you monitor delivery, troubleshoot issues, and ensure reliable communication.

## Supported Tools

| Tool slug | Name | Description |
|---|---|---|
| `SMTP2GO_ACTIVITY_SEARCH` | Search Email Activity | Tool to search activity events like sends, opens, clicks, and bounces. Use when you need to filter account email activity by date, event, recipient, or message ID. |
| `SMTP2GO_ALLOWED_SENDERS_ADD` | Add Allowed Sender | Tool to add a new allowed sender email address. Use when you need to whitelist a sender before sending email. Example: Add "user@example.com" to allowed senders list. |
| `SMTP2GO_ALLOWED_SENDERS_REMOVE` | Remove Allowed Sender | Tool to remove a sender email address from the allowed senders list. Use when you need to revoke send permissions for a validated address. |
| `SMTP2GO_ALLOWED_SENDERS_UPDATE` | Update Allowed Senders | Tool to update (replace) the entire allowed senders list in your SMTP2GO account. This action overwrites the current list with the provided email addresses and domain names. Use when you need to set or update who can send emails through your account. Example: 'Update allowed senders to include user@example.com and admin@company.com in whitelist mode.' |
| `SMTP2GO_ALLOWED_SENDERS_VIEW` | View Allowed Senders | Tool to view the list of allowed senders configured in your account. Use after setting up SMTP2GO authentication to retrieve your allowed-senders list. Example: 'Show me all verified allowed senders.' |
| `SMTP2GO_DOMAIN_ADD` | Add Sender Domain | Tool to add a new sender domain for SPF/DKIM verification. Use when you need to register a domain and optionally set tracking/return-path subdomains. |
| `SMTP2GO_EMAIL_SEARCH` | Search SMTP2GO Emails | Tool to search sent emails. Use when filtering your SMTP2GO account's email activity by criteria like date, sender, or recipient. Call after authentication. |
| `SMTP2GO_IP_ALLOW_LIST_ADD` | Add IP Allow List | Tool to add a public IP address to your account's IP allow list. Use when you need to whitelist specific sending sources by IP after confirming accuracy. Note: Only plain IP addresses are supported (no CIDR notation). Private/reserved IP ranges are rejected. |
| `SMTP2GO_IP_ALLOW_LIST_REMOVE` | Remove IP from Allow List | Tool to remove an IP address from your account's IP allow list. Use after identifying the IP you wish to revoke. |
| `SMTP2GO_IP_ALLOW_LIST_VIEW` | View IP Allow List | Tool to view the list of IP addresses in your IP allow list. Use after confirming your SMTP2GO API key is set. |
| `SMTP2GO_SMS_VIEW_RECEIVED` | View Received SMS | Tool to retrieve received SMS replies for your SMTP2GO account. Use when you need to fetch incoming SMS messages for analysis or display. Pagination supported via limit and offset. |
| `SMTP2GO_STATS_EMAIL_BOUNCES` | Get Email Bounces Stats | Tool to retrieve email bounces statistics. Use after sending emails to analyze bounce metrics over a time period. |
| `SMTP2GO_STATS_EMAIL_CYCLE` | Email Cycle Statistics | Tool to retrieve current email cycle/quota statistics. Use when you need to check the account's monthly email allowance, usage, and remaining quota for the current billing cycle. |
| `SMTP2GO_STATS_EMAIL_HISTORY` | Email History Statistics | Tool to retrieve email history statistics. Use when you need detailed delivery metrics within a date range. |
| `SMTP2GO_STATS_EMAIL_SPAM` | Email Spam Statistics | Tool to retrieve email spam report statistics. Use when analyzing spam trends for sent emails. |
| `SMTP2GO_STATS_EMAIL_UNSUBS` | Email Unsubscription Stats | Tool to retrieve email unsubscribe statistics. Use when you need unsubscribe data for your account over a date range. |
| `SMTP2GO_SUBACCOUNTS_SEARCH` | Search Subaccounts | Tool to search subaccounts. Use after authenticating to filter and paginate your subaccounts by name, email, or status. |
| `SMTP2GO_SUBACCOUNTS_USAGE` | Subaccounts Usage | Tool to retrieve usage statistics for subaccounts. Use when you need to monitor per-subaccount email usage. |
| `SMTP2GO_SUPPRESSION_ADD` | Add to Suppression List | Tool to add email addresses or domains to the suppression list. Use when you need to block sending emails to specific recipients or entire domains after unsubscribes or bounces. |
| `SMTP2GO_SUPPRESSION_REMOVE` | Remove suppression entry | Tool to remove an email address or domain from the suppression list. Use when you want to resume sending to the address or domain. |
| `SMTP2GO_SUPPRESSION_VIEW` | View Suppression List | Tool to view the suppression list. Use when you need to inspect suppressed email addresses in your account. |
| `SMTP2GO_TEMPLATE_EDIT` | Edit Email Template | Tool to edit details of an existing email template. Use when you need to update template properties after confirming its ID. |
| `SMTP2GO_TEMPLATE_SEARCH` | Search Email Templates | Tool to search your collection of email templates by ID or name. Use when you need to find templates matching specific criteria after authentication. |
| `SMTP2GO_TEMPLATE_VIEW` | View Email Template | Tool to view details of a specific email template. Use after you have the template ID to inspect. |
| `SMTP2GO_USERS_SMTP_ADD` | Add SMTP User | Tool to add a new SMTP user. Use when you need to provision a fresh SMTP credential after collecting username and password. |
| `SMTP2GO_USERS_SMTP_EDIT` | Edit SMTP User | Tool to edit details of an existing SMTP user. Use when you need to update username, password, sender restrictions, or enable/disable a user after confirming the target username. |
| `SMTP2GO_USERS_SMTP_REMOVE` | Remove SMTP User | Tool to remove an SMTP user from your account. Use when you need to revoke SMTP access for a user. |
| `SMTP2GO_USERS_SMTP_VIEW` | View SMTP Users | Tool to list all SMTP users configured on your account. Use when you need to retrieve SMTP user configurations. |
| `SMTP2GO_WEBHOOK_ADD` | Add Webhook | Tool to create a new webhook. Use when you need real-time notifications of email or SMS events. |
| `SMTP2GO_WEBHOOK_EDIT` | Edit Webhook | Tool to edit an existing webhook’s settings. Use when you need to update a webhook's configuration after creation. |
| `SMTP2GO_WEBHOOK_REMOVE` | Remove webhook | Tool to remove a webhook. Use when you want to delete a webhook by its ID from your SMTP2GO account. |
| `SMTP2GO_WEBHOOK_VIEW` | View Webhooks | Tool to view all webhooks configured in your account. Use when you need to inspect existing webhook configurations after setup. |

## Supported Triggers

None listed.

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

The Smtp2go MCP server connects Claude Cowork to your Smtp2go account through Composio. Once connected, Cowork can use the available Smtp2go tools and triggers to complete tasks on your behalf.

## Complete Code

None listed.

## How to build Smtp2go MCP Agent with another framework

- [OpenAI Agents SDK](https://composio.dev/toolkits/smtp2go/framework/open-ai-agents-sdk)
- [Claude Agent SDK](https://composio.dev/toolkits/smtp2go/framework/claude-agents-sdk)
- [Claude Code](https://composio.dev/toolkits/smtp2go/framework/claude-code)
- [Codex](https://composio.dev/toolkits/smtp2go/framework/codex)
- [OpenClaw](https://composio.dev/toolkits/smtp2go/framework/openclaw)
- [Hermes](https://composio.dev/toolkits/smtp2go/framework/hermes-agent)
- [CLI](https://composio.dev/toolkits/smtp2go/framework/cli)
- [Google ADK](https://composio.dev/toolkits/smtp2go/framework/google-adk)
- [LangChain](https://composio.dev/toolkits/smtp2go/framework/langchain)
- [Vercel AI SDK](https://composio.dev/toolkits/smtp2go/framework/ai-sdk)
- [Mastra AI](https://composio.dev/toolkits/smtp2go/framework/mastra-ai)
- [LlamaIndex](https://composio.dev/toolkits/smtp2go/framework/llama-index)
- [CrewAI](https://composio.dev/toolkits/smtp2go/framework/crew-ai)

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## Frequently Asked Questions

### What are the differences in Tool Router MCP and Smtp2go MCP?

With a standalone Smtp2go MCP server, the agents and LLMs can only access a fixed set of Smtp2go tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Smtp2go 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 Smtp2go tools.

### Can I manage the permissions and scopes for Smtp2go while using Tool Router?

Yes, absolutely. You can configure which Smtp2go 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 Smtp2go data and credentials are handled as safely as possible.

---
[See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)