Mailgi MCP Server

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answering

Mailgi is answering right now. Last checked 2 min ago. It exposes 67 tools. Last commit 2 Nov 2026.

Email for AI agents: register a real inbox with no human, then send, receive and read mail.

Uptime history 21 hours of history

21 hours agonow

100.0%

Uptime 24h

78 of 78 checks

Tools

read from the server

250 ms

Response time

average over 24h

Stars

last commit 2 Nov 2026

Nothing serious here today

Today is the operative word: we check Mailgi every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 2 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add mailgi --transport http https://api.mailgi.xyz/mcp

Settings → Connectors → Add custom connector, then paste this address

https://api.mailgi.xyz/mcp

~/.codex/config.toml

[mcp_servers.mailgi]
url = "https://api.mailgi.xyz/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "mailgi": {
      "url": "https://api.mailgi.xyz/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "mailgi": {
      "type": "http",
      "url": "https://api.mailgi.xyz/mcp"
    }
  }
}

Available tools 67

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

org

org_billing_get

Returns the organization's shared wallet: balance, prices and how to top up.

org_billing_topup

Creates a card payment link for the organization wallet.

org_billing_transactions

Lists the organization wallet ledger, newest first.

org_create

Creates an organization; the signed-in user becomes its owner.

org_get

Returns one organization.

org_invite_create

Emails an invitation to join the organization.

org_invite_list

Lists pending invitations.

org_invite_revoke

Revokes a pending invitation.

org_list

Lists the organizations the signed-in user belongs to.

org_login_request_code

Emails a 6-digit dashboard login code to a human's address. Creates the account on first login.

org_login_verify

Exchanges an emailed login code for a dashboard session token.

org_logout

Revokes the current dashboard session token.

org_me

Returns the signed-in user and the organizations they belong to.

org_member_list

Lists an organization's members and their roles.

org_member_remove

Removes a member from the organization, or leaves it when userId is your own.

org_member_set_role

Changes a member's role.

org_rename

Renames an organization.

org_usage

Returns daily send, receive and API counters across the organization.

org_webhook_create

Registers an HTTPS URL to be notified when mail arrives at one of the organization's inboxes.

org_webhook_delete

Deletes a webhook endpoint.

org_webhook_deliveries

Lists recent delivery attempts for a webhook endpoint.

org_webhook_enable

Re-enables a webhook endpoint that was switched off after repeated failures.

org_webhook_list

Lists webhook endpoints across the organization's inboxes.

org_webhook_resend

Queues a delivery attempt to be sent again.

domain

domain_attach

Attaches a custom domain and returns the DNS records to publish.

domain_detach

Detaches a custom domain from the organization.

domain_get

Returns a domain's verification status and the DNS records it needs.

domain_inbox_create

Creates an inbox with a chosen address on a domain. Its API key is shown once.

domain_inbox_delete

Removes an inbox and its mail from a domain.

domain_inbox_list

Lists the inboxes (agents) on a domain.

domain_list

Lists an organization's custom domains.

domain_usage

Returns daily send, receive and API counters for one domain.

domain_verify

Re-checks the domain's DNS records and verifies it if they are correct.

mail

mail_delete

Moves a message to the Trash folder.

mail_get

Returns one message with its full text and HTML body.

mail_list

Lists message headers in the mailbox, newest first by default; filter by folder with mailboxId.

mail_move

Moves a message to another folder.

mail_send

Sends an email from this agent's address. Mail to outside addresses is charged to the wallet.

mail_set_flags

Marks a message as seen or unseen, flagged or unflagged.

webhook

webhook_create

Registers an HTTPS URL to be notified when mail arrives. The signing secret is shown once.

webhook_delete

Deletes a webhook endpoint.

webhook_deliveries

Lists recent delivery attempts for a webhook endpoint.

webhook_enable

Re-enables a webhook endpoint that was switched off after repeated failures.

webhook_list

Lists this agent's webhook endpoints.

webhook_resend

Queues a delivery attempt to be sent again.

mailbox

mailbox_create

Creates a folder, optionally nested under another.

mailbox_delete

Deletes a custom folder.

mailbox_list

Lists all folders, including Inbox, Sent and Trash.

mailbox_rename

Renames a folder.

agent

agent_delete

Permanently deletes this agent, its mailbox and all its API keys.

agent_get

Returns this agent's profile: its addresses, label and domain.

agent_usage

Returns this agent's daily send and API counters; the latest day is partial.

apikey

apikey_create

Creates another API key for this agent. The key is shown once.

apikey_list

Lists this agent's API keys. Key values are never shown again.

apikey_revoke

Revokes an API key immediately.

billing

billing_get

Returns the wallet this agent spends from: balance, prices and how to top up.

billing_topup

Creates a card payment link for this agent's wallet. Give it to a human to pay.

billing_transactions

Lists the wallet ledger, newest first.

regtoken

regtoken_create

Creates a token that lets an agent register its own address on this domain. Shown once.

regtoken_list

Lists a domain's registration tokens.

regtoken_revoke

Revokes a registration token.

topup

topup_lookup

Shows which wallet a top-up for a Mailgi address would credit, and the allowed amounts.

topup_start

Creates a card payment link for the wallet behind any Mailgi address. Give it to a human to pay.

topup_status

Returns whether a top-up payment has been paid and credited.

health

health

Checks that the Mailgi API, its database and the mail server are up.

invite

invite_accept

Accepts an organization invitation with the token from the invite email.

register_agent

Creates a new agent with its own email address and returns its API key, shown once.

Endpoints

URL	Transport	State	Latency	Checked
https://api.mailgi.xyz/mcp	streamable-http	answering	249 ms	2 min ago

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Mailgi — questions

Answers built from our own checks of this server.

What can Mailgi do?

It exposes 67 tools, read directly from the server on our last check. Among them: agent_delete, agent_get, agent_usage, apikey_create, apikey_list, apikey_revoke and 61 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

What is Mailgi mostly used for?

Its tools cluster around org, domain and mail. That is what this server is built to work with — the grouping comes from the actual tool names, not from a category we assigned.

Is Mailgi working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 78 of 78 checks got a reply (100.0%), average response time 250 ms. The bar chart above shows every period we have measured.

How do I connect Mailgi?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Mailgi need an API key?

No. Mailgi completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 67 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Mailgi?

It answers our handshake in 250 ms on average, which is faster than 57% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is Mailgi open source?

The code is open source: it is published under the MIT licence, written in TypeScript, 0 stars on GitHub and 2 open issues. The licence covers the code in the repository, not the hosted service at api.mailgi.xyz, which runs on its operator's own terms.