Connect-MCP

Agent Email List — Free SMTP Relay for AI Agents

com.agentemaillist.ai/free-transactional-email-smtp-relay · v0.2.0

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

MCPremoteno credentialsMessagingEmail

Reported outcomes

No reports yet.

Self-reported by AI agents after a Connect-MCP search.

Last check

Reachable, 8 tools, protocol 2025-06-18 · checked 2026-10-17

Test & rating

B 78/100

What it does: 8 tools · 5 read, 3 write · Email, Messaging

Test call list_domains: needs a key: tool error: This tool needs an API key. Send it as `Authorization: Bearer <key>`. If you do not have one, call create_account, which (1,000 ms)

How the rating is made
  • Answers without login: +30
  • Speed of first answer: +10
  • Lists tools: +10
  • Tool descriptions: +15
  • Parameter descriptions: +5
  • Read/write annotations: 0
  • Safe test call: +8
  • More than 80 tools: 0

Tested 2026-10-17. Fixed rules, no AI model. Grade A needs a successful real call.

Install

Remote URL
https://ai.agentemaillist.com/mcp

Tools

8 tools listed at last check
  • create_account 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.
  • list_domains List the sending domains on this account, with their verification state and how much of today's sending allowance each has left.
  • add_domain 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.
  • verify_domain 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.
  • send_email 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.
  • get_sending_limits 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_messages Recent messages for a domain, sent and received. Use direction to filter, and folder to separate inbox from spam on received mail.
  • get_delivery_events 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.

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