English Français العربية

Mails.ai — Agent Email

Official registry Productivity

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

Website

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http mails-ai-agent-email 'https://api.mails.ai/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "mails-ai-agent-email": {
            "type": "http",
            "url": "https://api.mails.ai/mcp"
        }
    }
}
NPM package @mailsai/mcp-server
Claude Code 
claude mcp add mails-ai-agent-email -e 'MAILS_API_KEY=<your mails_api_key>' -e 'MAILS_BASE_URL=<MAILS_BASE_URL>' -- npx -y @mailsai/mcp-server@0.5.0
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "mails-ai-agent-email": {
            "command": "npx",
            "args": [
                "-y",
                "@mailsai/mcp-server@0.5.0"
            ],
            "env": {
                "MAILS_API_KEY": "<your mails_api_key>",
                "MAILS_BASE_URL": "<MAILS_BASE_URL>"
            }
        }
    }
}

Environment variables

  • MAILS_API_KEY required secret Your mails.ai API key. Use an mk_test_ key to run against the sandbox or an mk_live_ key to send real mail. Free key at https://mails.ai
  • MAILS_BASE_URL Override the API base URL. Defaults to the hosted mails.ai API; only needed for staging or self-hosted deployments.

Frequently asked questions

What is Mails.ai — Agent Email?

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

How do I install Mails.ai — Agent Email?

It runs as a remote server. In Claude Code: claude mcp add --transport http mails-ai-agent-email 'https://api.mails.ai/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Mails.ai — Agent Email need an API key?

Yes. It expects MAILS_API_KEY, which you set in its configuration.

Who maintains Mails.ai — Agent Email?

It is published by ai.mails. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.