MCP server

Agent Email List — Free SMTP Relay for AI Agents Official

com.agentemaillist.ai/free-transactional-email-smtp-relay

Checked 28 Oct 2026, 09:03 UTC · Connected to it and listed its tools

Free transactional email + SMTP relay. Agents self-signup, no API key needed to start.

Website Source

At a glance

Type

MCP server

Publisher

agentemaillist.com (verified by the MCP Registry)

Status

Working at last check

Tools

8

Token cost

About 1,146 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

28 Oct 2026, 09:03 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http free-transactional-email-smtp-relay https://ai.agentemaillist.com/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.free-transactional-email-smtp-relay]
url = "https://ai.agentemaillist.com/mcp"

Gemini CLI

{"mcpServers":{"free-transactional-email-smtp-relay":{"httpUrl":"https://ai.agentemaillist.com/mcp"}}}

Cursor

{"mcpServers":{"free-transactional-email-smtp-relay":{"url":"https://ai.agentemaillist.com/mcp"}}}

VS Code

{"servers":{"free-transactional-email-smtp-relay":{"type":"http","url":"https://ai.agentemaillist.com/mcp"}}}

Antigravity

agy mcp add free-transactional-email-smtp-relay https://ai.agentemaillist.com/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"free-transactional-email-smtp-relay","server_url":"https://ai.agentemaillist.com/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"free-transactional-email-smtp-relay","server_url":"https://ai.agentemaillist.com/mcp"}

Tools

• add_domain ~132 tokens
  Register a domain to send from, and get the DNS records that must be published before it will work. Publishing DNS usually needs a human with registrar access, so start this early. The domain cannot send until verify_domain succeeds.
• create_account Changes accounts · ~171 tokens
  Create an account on this email service and get an API key back. Needs no existing credentials, so an agent with nothing can call this first. The key is returned once and never again. Free, with no card and no trial clock.
• get_delivery_events ~138 tokens
  What happened to messages on this domain: accepted, delivered, failed, and so on. A send returning success means queued, not delivered; this is where the delivery outcome actually appears.
• get_sending_limits ~165 tokens
  How much this domain may send today and what graduates it to the next rung, plus this account's standing: how many domains it may hold and whether sending is paused. New domains start at a low daily cap and climb as they prove themselves, so check this before planning a bulk send rather than discove
• list_domains ~62 tokens
  List the sending domains on this account, with their verification state and how much of today's sending allowance each has left.
• list_messages ~129 tokens
  Recent messages for a domain, sent and received. Use direction to filter, and folder to separate inbox from spam on received mail.
• send_email Sends messages · ~260 tokens
  Send a message. The domain must be verified and the from address must belong to it. Counts one against the daily allowance per recipient. Set test_mode true to run the whole pipeline, including content screening, without sending anything and without spending allowance — do that first when building.
• verify_domain ~89 tokens
  Re-read DNS now and mark the domain active if its SPF and DKIM records are visible. DNS takes minutes to hours to propagate; poll this every few minutes, not every few seconds.

Browse

• Domains and DNS
• Email

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