# Agent Email List — Free SMTP Relay for AI Agents > Agent Email List — Free SMTP Relay for AI Agents, an MCP server by ai.agentemaillist.com, listed from the official MCP registry. Indexed, not reviewed: facts and our own checks, no score or ranking. Free transactional email + SMTP relay. Agents self-signup, no API key needed… - Canonical: https://www.anchorterminal.com/tools/agentemaillist-free-transactional-email-smtp-relay - Markdown: https://www.anchorterminal.com/tools/agentemaillist-free-transactional-email-smtp-relay.md (~1,150 tokens) - Slim: https://www.anchorterminal.com/tools/agentemaillist-free-transactional-email-smtp-relay.min.md (~1,080 tokens, same facts, less prose, for token-sensitive contexts) - JSON: https://www.anchorterminal.com/tools/agentemaillist-free-transactional-email-smtp-relay.json (this page as data, same URL with Accept: application/json) - Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt) - API: https://www.anchorterminal.com/api/v1/index.json - Updated: 2026-10-05 # Agent Email List — Free SMTP Relay for AI Agents > Indexed, not reviewed: facts from the official MCP registry and our own checks. No score, grade or rank, and not in the rankings until the panel reviews it. How the index works: https://www.anchorterminal.com/indexed/ - Kind: MCP server, by ai.agentemaillist.com (https://ai.agentemaillist.com) - Category: Email delivery APIs (https://www.anchorterminal.com/categories/email.md) - Listed because: It's published in the registry under ai.agentemaillist.com, a namespace the registry only gives to whoever proves they control that domain. - What the official MCP registry says: Free transactional email + SMTP relay. Agents self-signup, no API key needed to start. ## Facts - MCP registry: `com.agentemaillist.ai/free-transactional-email-smtp-relay` 0.2.0 - Endpoint: https://ai.agentemaillist.com/mcp (streamable HTTP) - Source: https://github.com/lbesecker195/AI-Agent-Email-List - Website: https://ai.agentemaillist.com - GitHub stars: 1 - Registry entry updated: 2026-09-15 ## Tools - Tools it lists (8, about 999 tokens of context, `tools/list` without credentials, checked 2026-10-04 22:21 UTC): - `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… - `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,… - `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… - `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… - `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… - `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… - How its tools read to an agent (0 errors, 12 warnings, 1 note, about 999 tokens; rules at https://www.anchorterminal.com/check.md; not part of the score): - warn TC11 get_delivery_events: 3 parameters without a description: domain, limit, recipient - warn TC11 list_messages: 3 parameters without a description: direction, domain, folder - warn TC11 send_email: 1 parameter without a description: subject - warn TC11 verify_domain: its one parameter, name, has no description - warn TC16 add_domain: no readOnlyHint or destructiveHint - warn TC16 create_account: no readOnlyHint or destructiveHint - warn TC16 get_delivery_events: no readOnlyHint or destructiveHint - warn TC16 get_sending_limits: no readOnlyHint or destructiveHint - warn TC16 list_domains: no readOnlyHint or destructiveHint - warn TC16 list_messages: no readOnlyHint or destructiveHint - warn TC16 send_email: no readOnlyHint or destructiveHint - warn TC16 verify_domain: no readOnlyHint or destructiveHint - note TC24 server: 8 of 8 tools have no outputSchema - JSON: https://www.anchorterminal.com/api/v1/tools/agentemaillist-free-transactional-email-smtp-relay.json - Being indexed says nothing about quality, and nobody can pay for it. Ask for a review: https://www.anchorterminal.com/builders/#claiming