Mailgi

MCP server · hosted · v1.0.0 · xyz.mailgi/mailgi

Online · tested 5h agoNEW · 7h agoSeen in the registry 6h ago

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

What it does

Mailgi is an MCP server, a connector that lets an AI assistant use it as a tool. It is hosted: an assistant connects to it over the internet, nothing to install.

No capability identified yet from its description.

Facts come from the Official MCP Registry, as declared by the publisher. Capabilities are matched automatically (low confidence). None of this is a test of the tool.

At a glance

Hosted (remote)YES

Local installNO

Live checkOnline · 67 tools

Version1.0.0

PriceNot in the registry

First seen01 Nov 2026

Last checked6h ago

How to connect

As declared in the Official MCP Registry · hosted endpoint tested by Electra Index 5h ago (live check)

Hosted endpoint

https://api.mailgi.xyz/mcp streamable-http

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

MCP settings (Claude Desktop, Cursor and other MCP clients)

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

Live check

Electra Index connected to the hosted endpoint 5h ago

ONLINE Mailgi answered an MCP connection on 01 Nov 2026 and introduced itself as mailgi 1.0.0 (MCP protocol 2025-06-18).

67 tools offered to AI assistants

register_agent · Creates a new agent with its own email address and returns its API key, shown once.
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.
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 · Checks that the Mailgi API, its database and the mail server are up.
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.
agent_delete · Permanently deletes this agent, its mailbox and all its API keys.
mail_list · Lists message headers in the mailbox, newest first by default; filter by folder with mailboxId.
mail_get · Returns one message with its full text and HTML body.

Show 55 more

mail_send · Sends an email from this agent's address. Mail to outside addresses is charged to the wallet.
mail_delete · Moves a message to the Trash folder.
mail_move · Moves a message to another folder.
mail_set_flags · Marks a message as seen or unseen, flagged or unflagged.
mailbox_list · Lists all folders, including Inbox, Sent and Trash.
mailbox_create · Creates a folder, optionally nested under another.
mailbox_rename · Renames a folder.
mailbox_delete · Deletes a custom folder.
apikey_list · Lists this agent's API keys. Key values are never shown again.
apikey_create · Creates another API key for this agent. The key is shown once.
apikey_revoke · Revokes an API key immediately.
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.
webhook_list · Lists this agent's webhook endpoints.
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_resend · Queues a delivery attempt to be sent again.
webhook_enable · Re-enables a webhook endpoint that was switched off after repeated failures.
org_me · Returns the signed-in user and the organizations they belong to.
org_logout · Revokes the current dashboard session token.
org_list · Lists the organizations the signed-in user belongs to.
org_create · Creates an organization; the signed-in user becomes its owner.
org_get · Returns one organization.
org_rename · Renames an organization.
org_member_list · Lists an organization's members and their roles.
org_member_set_role · Changes a member's role.
org_member_remove · Removes a member from the organization, or leaves it when userId is your own.
org_invite_create · Emails an invitation to join the organization.
org_invite_list · Lists pending invitations.
org_invite_revoke · Revokes a pending invitation.
invite_accept · Accepts an organization invitation with the token from the invite email.
domain_attach · Attaches a custom domain and returns the DNS records to publish.
domain_list · Lists an organization's custom domains.
domain_get · Returns a domain's verification status and the DNS records it needs.
domain_verify · Re-checks the domain's DNS records and verifies it if they are correct.
domain_detach · Detaches a custom domain from the organization.
domain_inbox_list · Lists the inboxes (agents) on a domain.
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.
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.
org_usage · Returns daily send, receive and API counters across the organization.
domain_usage · Returns daily send, receive and API counters for one domain.
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_webhook_list · Lists webhook endpoints across the organization's inboxes.
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_resend · Queues a delivery attempt to be sent again.
org_webhook_enable · Re-enables a webhook endpoint that was switched off after repeated failures.

What "online" means: the server answered an MCP connection at the time of the check. It is not a guarantee of security, quality or continuous uptime. How we test: we open an MCP session and ask for the tool list, as an AI assistant would. We never run a tool and never send a key. Checked every few days. Method

Is this your server? Monitoring Pro: a check every 30 minutes and an email within the hour when it stops answering. Launch offer: $39.99 once, for life.

Facts & evidence

Each fact shows where it was seen and when.

Fact	Value	Evidence	Source	Last confirmed
Hosted endpoint	https://api.mailgi.xyz/mcp	DECLARED	SRC-001 Official MCP Registry	6h ago
Local install (package)	no	DECLARED	SRC-001 Official MCP Registry	6h ago
Remote access (hosted)	yes	DECLARED	SRC-001 Official MCP Registry	6h ago
Website	https://www.mailgi.xyz/mcp.html	DECLARED	SRC-001 Official MCP Registry	6h ago
Repository	https://github.com/Mailgi/mailgi	DECLARED	SRC-001 Official MCP Registry	6h ago
Registry status	active	DECLARED	SRC-001 Official MCP Registry	6h ago
Version	1.0.0	DECLARED	SRC-001 Official MCP Registry	6h ago
MCP server	yes	DECLARED	SRC-001 Official MCP Registry	6h ago

Change history

NEW01 Nov 2026
first seen in the index

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Questions about Mailgi

How do I connect Mailgi?

Use the hosted endpoint https://api.mailgi.xyz/mcp in your assistant's MCP settings. The exact settings are in "How to connect" above, as declared in the Official MCP Registry.

What tools does Mailgi offer?

When Electra Index connected on 01 Nov 2026, it listed 67 tools: register_agent, org_login_request_code, org_login_verify, topup_lookup, topup_start, topup_status, health, agent_get and more. The full list is in "Live check" above.

Is Mailgi online?

Yes. Its hosted endpoint answered an MCP connection from Electra Index 5h ago.