Mails.ai — Agent Email MCP Server: Install & Setup

Install Mails.ai — Agent Email in Claude Code

Remote URL

Claude Code

claude mcp add --transport http mails-ai-agent-email https://api.mails.ai/mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "mails-ai-agent-email": {
      "url": "https://api.mails.ai/mcp"
    }
  }
}

npm

Claude Code

claude mcp add mails-ai-agent-email -e MAILS_API_KEY=... -- npx -y @mailsai/mcp-server

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "mails-ai-agent-email": {
      "command": "npx",
      "args": [
        "-y",
        "@mailsai/mcp-server"
      ],
      "env": {
        "MAILS_API_KEY": "..."
      }
    }
  }
}

Replace each ... with your own value.

Frequently asked questions

What does the Mails.ai — Agent Email MCP server do?

A real inbox for AI agents: send, receive and thread email, behind a prompt-injection firewall.

Is the Mails.ai — Agent Email MCP server free?

The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.

Does Mails.ai — Agent Email run locally or remotely?

Local + Remote. Can run locally or be used as a hosted remote server.

How do I add Mails.ai — Agent Email to Claude Code?

Run: claude mcp add --transport http mails-ai-agent-email https://api.mails.ai/mcp

More communication MCP servers

View all

Mailsink

heocoi/mailsink-mcp

Disposable inboxes for AI agents and CI: catch the verification email, read the OTP or link.

LocalAccount needed

Mailrith Email Marketing

anrawool/mailrith-agent-platform

Manage Subscribers, Broadcasts, Sequences, Automations, and reporting in Mailrith.

Local + RemoteAccount needed

mailsocket

mailsocket/mailsocket-sdk

Email inboxes for AI agents: create an inbox, then block until the OTP or magic link arrives.

Local + RemoteAccount needed

Mailoo - Email

Bitfloo/mailoo

Email MCP server for AI agents: IMAP/SMTP, Gmail, Outlook, calendar, ManageSieve, AI triage, OAuth2.

LocalFree

ManyContacts

manycontacts/mcp

WhatsApp Business CRM: send messages, manage contacts, campaigns, and AI agents.

LocalAccount needed

Mailkite

mailkite/mailkite-mcp

Give an AI agent its own inbox — receive email as a webhook, send over a verified domain.

Local + RemoteAccount needed