MCP.Market

Agent Email List — Free SMTP Relay for AI Agents MCP server

online · 100% uptime
by ai.agentemaillist.com·com.agentemaillist.ai/free-transactional-email-smtp-relay·v0.2.0·1 stars
No reviews yet

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

B80/100grade B
Write a reviewRun it
What users say
No reviews yet
Be the first
Safety scan
B80/100

full report

Adoption
Growing

1 stars

Reviews

Write one

Nobody has reviewed Agent Email List — Free SMTP Relay for AI Agents yet.

If you have run it, two minutes of your experience saves the next person an afternoon.

Agent Email List — Free SMTP Relay for AI Agents tools (8, 2 write)

write = sends, deletes, buys or posts
  • add_domainFree

    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_accountwrite actionFree

    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_eventsFree

    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_limitsFree

    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 discovering it part-way. Call it with no domain for the account-level answer alone.

  • list_domainsFree

    List the sending domains on this account, with their verification state and how much of today's sending allowance each has left.

  • list_messagesFree

    Recent messages for a domain, sent and received. Use direction to filter, and folder to separate inbox from spam on received mail.

  • send_emailwrite actionFree

    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_domainFree

    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.

Public scan report

scanner v0.1.9 · 2026-09-27 · same rubric, same numbers if you re-run it

1 high
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 1720ms20/20
  • Tool poisoning8 tool descriptions checked15/15
  • Auth qualityopen endpoint exposes 2 write-action tools with no auth3/15
  • Maintenancelast push 9 days ago15/15
  • Maintainer identitynamespace and repository owner differ; GitHub account older than a year; website matches verified namespace7/10

Findings (1)

  • highWrite-action tools reachable without authenticationauth.open-write
Overall 80/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Agent Email List — Free SMTP Relay for AI Agents compares

Against every graded Email MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
80/100
higher than 65% of 916 Email servers
Tools
8
the typical Email server has 7
Tools that change things
25%
typical: 25%. Fewer write tools means less an agent can break
Uptime
100%
of our recent checks; the typical remote Email server answers 100%
Response time
360 ms
faster than 44% of 609 Email servers
GitHub stars
1
more than 65% of 493 Email servers

What its tools let an agent do: 5 read · 2 create · 1 send or post

Install Agent Email List — Free SMTP Relay for AI Agents in Claude Code, Cursor or VS Code

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

What the publisher says

From the Agent Email List — Free SMTP Relay for AI Agents repository's README, as published. We do not edit it. Read it on GitHub

Free SMTP Relay and Email API for AI Agents

An email service an AI agent can sign up for on its own. No credit card, no sales call, no human with a corporate account. Free, with an MCP server, a Mailgun-shaped REST API, DKIM signing, automatic sending warmup and inbound mail.

Live at ai.agentemaillist.com · Source available · Built in Elixir and Phoenix

For AI agents: start here

This is a remote MCP server. Add it and the whole service arrives as tools:

https://ai.agentemaillist.com/mcp

JSON-RPC 2.0 over HTTP POST. The important part:

createaccount needs no credentials.** An agent that has just found this

server can call it, get an API key back, and start sending. Every other

transactional email provider stops an agent at a payment form or an identity

check. This one does not.

See what is available before committing to anything:

curl -X POST https://ai.agentemaillist.com/mcp \
  -H 'content-type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'

The tools

Send the key as Authorization: Bearer on every call after the first.

Two things that will stop you

A domain must be verified in DNS before it can send. Publishing DNS usually needs a human with registrar access, so start it early. Until then every send returns a refusal explaining exactly that.

A newly verified domain starts at 10 messages a day and climbs as it proves itself, because a domain that opens at full volume gets filtered by receivers. Call getsendinglimits before planning a bulk send rather than finding out part way through.

Use test_mode: true on your first send. It runs the whole pipeline, screening included, sends nothing, and spends none of the daily allowance.

The limits, so you never meet one by surprise

getsendinglimits reports all of these live, with no domain argument needed. Every 429 carries a Retry-After. Opening a second account does not get you more: accounts are limited by address, so both come out of one budget.

For developers: the REST API

Mailgun-shaped, so most Mailgun client libraries work against it unchanged by pointing at a different base URL.

# An account and an API key, in one request
curl -X POST https://ai.agentemaillist.com/v1/accounts \
  -d 'email=you@company.com' -d 'password=a sufficiently long password'

# Send
curl -X POST https://ai.agentemaillist.com/v3/yourdomain.com/messages \
  --user 'api:YOUR_KEY' \
  -F from='you@yourdomain.com' \
  -F to=someone@example.com \
  -F subject='Hello' \
  -F text='Hello there.'

Full API reference, written for machines to read: ai.agentemaillist.com/llms.txt. Its sending limits are generated from the running service, so they are the limits you will actually meet rather than a number written down once.

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Agent Email List — Free SMTP Relay for AI Agents: common questions

Is Agent Email List — Free SMTP Relay for AI Agents MCP server safe?
Mostly: it is graded B (80/100). Read the Agent Email List — Free SMTP Relay for AI Agents safety report
How do I install Agent Email List — Free SMTP Relay for AI Agents?
It runs remotely at ai.agentemaillist.com. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does Agent Email List — Free SMTP Relay for AI Agents need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Agent Email List — Free SMTP Relay for AI Agents maintained?
The last commit was 47 days ago (2026-09-18). The latest release is v0.2.0.
Is Agent Email List — Free SMTP Relay for AI Agents up?
100% of our last 28 checks got an answer. We check remote servers about four times a day.
What can I use instead of Agent Email List — Free SMTP Relay for AI Agents?
Servers from other publishers that do the same job: Mailoo - Email MCP Server, Email MCP server and Imap MCP server. Compare all Agent Email List — Free SMTP Relay for AI Agents alternatives.
How does Agent Email List — Free SMTP Relay for AI Agents compare with other Email MCP servers?
safety score 80/100 (higher than 65% of 916 Email servers); tools 8 (the typical Email server has 7); tools that change things 25% (typical: 25%. Fewer write tools means less an agent can break). Full comparison.

Alternatives to Agent Email List — Free SMTP Relay for AI Agents

Same job from other publishers: the closest match first, then the best rated.

All Agent Email List — Free SMTP Relay for AI Agents alternatives →
  • Mailoo - Email MCP Server
    Email MCP server for AI agents: IMAP/SMTP, Gmail, Outlook, calendar, ManageSieve, AI triage, OAuth2.
    A
  • Email
    IMAP/SMTP email MCP server — 52 tools, stdio + HTTP, IMAP IDLE push, multi-account, AI triage.
    B
  • Imap
    IMAP/SMTP MCP server to search, read, organize, send, reply & forward email for AI assistants
    A
  • Impreza Host
    No-KYC offshore hosting an AI agent runs end-to-end: no-email signup, crypto, VPS, deploy, Tor.
    B
  • Fluxmail
    Read, search, draft, send, and organize email through Gmail, Outlook, and IMAP/SMTP mailboxes.
    B