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Deadsimple Email MCP Server

Developer ToolsUse Caution4.2MCP RegistryLocalRemote
Free

Server data from the Official MCP Registry

Give an agent its own inbox: send, receive, and pull signup codes from real email.

About

Give an agent its own inbox: send, receive, and pull signup codes from real email.

Remote endpoints: streamable-http: https://api.deadsimple.email/mcp

Security Report

4.2
Use Caution4.2High Risk

Dead Simple Email is a well-structured SDK and MCP server for email management with proper authentication, reasonable permissions, and clean code practices. Minor code quality concerns around broad exception handling and validation edge cases exist, but no critical security vulnerabilities were identified. The server appropriately requires API key authentication and implements network access controls to prevent SSRF attacks. Supply chain analysis found 3 known vulnerabilities in dependencies (2 critical, 0 high severity). Package verification found 1 issue.

4 files analyzed · 10 issues found

Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.

Permissions Required

This plugin requests these system permissions. Most are normal for its category.

HTTP Network Access

Connects to external APIs or services over the internet.

env_vars

Check that this permission is expected for this type of plugin.

File System Read

Reads files on your machine. Normal for tools that analyze or process local data.

What You'll Need

Set these up before or after installing:

Dead Simple Email API key (starts with dse_). Get one instantly with no signup form: POST https://api.deadsimple.email/v1/auth/agent-signupRequired

Environment variable: DSE_API_KEY

How to Install & Connect

Available as Local & Remote

This plugin can run on your machine or connect to a hosted endpoint. during install.

Documentation

View on GitHub

From the project's GitHub README.

Dead Simple Email

Email infrastructure for AI agents. One call gives an agent a real, deliverable inbox — no SMTP credentials, no DNS, no dashboard.

deadsimple.email · Docs · API reference

Sign up with no human in the loop

An agent can provision its own account, API key and live inbox in a single unauthenticated call:

curl -X POST https://api.deadsimple.email/v1/auth/agent-signup

That returns a trial account (1 inbox, 10 sends/hour, 25/day). Claim it later with a verified email to move to the Free plan, keeping the same key and inboxes.

MCP server

Listed in the official MCP Registry as email.deadsimple/dead-simple-email, and on Smithery and Glama.

Remote (recommended) — nothing to install:

{
  "mcpServers": {
    "dead-simple-email": {
      "type": "http",
      "url": "https://api.deadsimple.email/mcp",
      "headers": { "Authorization": "Bearer dse_your_api_key" }
    }
  }
}

Local (stdio):

{
  "mcpServers": {
    "deadsimple": {
      "command": "python",
      "args": ["-m", "deadsimple.mcp"],
      "env": { "DSE_API_KEY": "dse_your_api_key" }
    }
  }
}

14 tools: create_inbox, list_inboxes, delete_inbox, send_email, read_messages, read_message, reply_to_message, forward_message, wait_for_email, get_verification_code, get_verification_link, list_threads, read_thread, get_usage.

The one agents reach for most is get_verification_code — it pulls the OTP or magic link out of the newest inbound message, so an agent can sign itself up for a third-party service or clear a 2FA prompt without ever parsing an email body.

SDKs

LanguagePackageSource
Pythondeadsimple-emailpython/
TypeScriptdeadsimple-emailnode/
pip install deadsimple-email
npm install @deadsimple/email
from deadsimple import DeadSimple

dse = DeadSimple("dse_your_api_key")
inbox = dse.inboxes.create(display_name="Support Bot")
dse.messages.send(inbox.inbox_id, to=["someone@example.com"],
                  subject="Hello", text_body="Sent by an agent.")

Framework integrations for LangChain, CrewAI, LlamaIndex, AutoGen and OpenAI Agents live in python/src/deadsimple/integrations/.

Repository layout

PathWhat
python/Python SDK + MCP server
node/TypeScript SDK
skills/Agent skill files for Claude Code, Cursor, Windsurf
mcp/server.json manifest for the official MCP Registry

License

MIT

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