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letterport

Official registry Productivity

Real email inboxes for AI agents: create addresses, read mail as JSON, reply in threads.

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 letterport 'https://api.letterport.dev/mcp' --header 'Authorization: <Optional. Clients that sign in through the browser (OAuth) need nothing; others send Bearer lp_… (an API key).>'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "letterport": {
            "type": "http",
            "url": "https://api.letterport.dev/mcp",
            "headers": {
                "Authorization": "<Optional. Clients that sign in through the browser (OAuth) need nothing; others send Bearer lp_… (an API key).>"
            }
        }
    }
}

Frequently asked questions

What is letterport?

Real email inboxes for AI agents: create addresses, read mail as JSON, reply in threads.

How do I install letterport?

It runs as a remote server. In Claude Code: claude mcp add --transport http letterport 'https://api.letterport.dev/mcp' --header 'Authorization: <Optional. Clients that sign in through the browser (OAuth) need nothing; others send Bearer lp_… (an API key).>'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does letterport need an API key?

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

Who maintains letterport?

It is published by dev.letterport. 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.