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agent-inbox

by gsd-build·42·Score 45

MCP server providing temporary email addresses for AI agents to handle email verification and auth flows automatically.

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Overview

agent-inbox is a well-implemented MCP server that creates temporary email addresses on demand, allowing AI agents to sign up for services, receive confirmation emails, and extract verification links without manual intervention. The server supports multiple email providers with automatic fallback, includes tools for inbox management and verification link extraction, and offers an interactive installer that auto-configures with popular AI coding agents. The implementation includes proper cleanup mechanisms and smart polling with backoff for reliable email detection.

Try asking AI

After installing, here are 6 things you can ask your AI assistant:

you:Automated account registration for services requiring email verification
you:Testing email-based authentication flows in development environments
you:AI agent testing of sign-up workflows without human intervention
you:Does it require API keys or accounts?
you:How long do email inboxes last?
you:Can it handle attachment downloads?

When to choose this

Choose agent-inbox when you need AI agents to handle email verification flows without API keys or manual intervention.

When NOT to choose this

Don't choose this if you need persistent email addresses or if services block disposable email domains, as inboxes don't survive server restarts.

Tools this server exposes

6 tools extracted from the README
  • create_inbox

    Spin up a temporary email address with optional prefix and name for reference.

  • check_inbox

    Check for messages in an inbox, returning subjects, bodies, and verification links.

  • wait_for_email

    Poll until a matching email arrives, filtering by sender and subject with auto-retries.

  • verify_email

    One-shot verification: polls for confirmation email, extracts the link, and visits it.

  • list_inboxes

    Show all active inboxes with their names and providers.

  • delete_inbox

    Destroy an inbox and its backing account.

Comparable tools

temporary-mailmailinator-mcpshell-mcp

Installation

Install

npx gsd-agent-inbox

The interactive installer auto-detects your AI coding agents (Claude Code, Codex CLI, Cursor, Gemini CLI, Windsurf) and configures the MCP server automatically.

Manual Setup for Claude Desktop

Add to ~/.claude/settings.json:

{
  "mcpServers": {
    "agent-inbox": {
      "command": "npx",
      "args": ["-y", "gsd-agent-inbox"]
    }
  }
}

FAQ

Does it require API keys or accounts?
No API keys or accounts are required. The server uses mail.tm as the primary provider with automatic fallback to 1secmail.
How long do email inboxes last?
Inboxes are in-memory only and don't survive server restarts. They are automatically cleaned up when the MCP server shuts down.
Can it handle attachment downloads?
No, it currently only supports text and HTML email bodies without attachment support.

Compare agent-inbox with

GitHub →

Last updated · Auto-generated from public README + GitHub signals.