"Finding MCP servers with high ratings and no API key required" matching MCP servers:

A secure email gateway MCP server that protects AI agents from prompt injection attacks by scanning emails for malicious instructions before they reach the agent.

MCP server for Claude Code CLI that integrates with Google Workspace, enabling management of Docs, Sheets, Drive, Gmail, Calendar, and Apps Script.

A minimal MCP server for sending plain-text emails and managing Gmail user labels over stdio, using only gmail.send and gmail.labels OAuth scopes.

An MCP server that provides AI agents with direct access to authoritative Cakemail API specifications, enabling accurate code generation and eliminating hallucination.

Enables to interact with Nylas API for email, calendar, and contacts via MCP, providing documentation, code samples, and code generation tools.

Provides MCP tools for searching, reading, and drafting Gmail emails, as well as querying SAP OData endpoints with safe read operations and mock mode.

Comprehensive email validation MCP server that checks syntax, MX records, disposable domains, role-based accounts, SPF/DKIM, typo suggestions, and risk scoring.

MCP server for inspecting email domains and addresses, providing objective domain-level email infrastructure answers such as MX, SPF, DMARC, MTA-STS, and disposable-domain evidence.

An MCP server that exposes Google Docs and Gmail capabilities to LLMs via SSE transport.

Create disposable email inboxes, extract OTP codes in 15 languages, and receive webhooks — all from your AI agent. One call: create inbox → wait for email → get the verification code. Supports 7 domains, email forwarding, and HMAC-signed webhooks with OTP included in payload. Free tier available.

An MCP-compliant server that exposes Gmail and Google Docs as tools, enabling AI agents to draft, send, and manage emails, as well as create, read, and append to documents through natural language.

Sendmux is an email inbox API and email API for AI agents. Use this MCP server to let authorised agents work with Sendmux mailboxes, inbound email, clean JSON parsing, webhooks, outbound sending, provider routing, logs, billing, and team controls.

MCP server wrapping Samotpravil API documentation, providing tools to search for methods, parameters, and examples, with optional proxy to the live API.

A comprehensive MCP server integrating Google Docs, Sheets, Drive, Gmail, Calendar, and Apps Script APIs, featuring unique Apps Script support for AI-driven automation.

Find professional email addresses from name + company domain. Tests 15+ patterns against MX records with confidence scoring, with pay-per-call via x402.

Audits email deliverability configuration for a domain, checking SPF, DKIM, DMARC, and MX records, returning a score and recommendations.

Enables AI assistants to browse, inspect, and call the Cakemail API via dynamically loaded OpenAPI spec.

Enables AI agents to send emails via Cloudflare's Email Service. Provides both MCP server integration for AI tools and a REST API for traditional applications with support for HTML content, attachments, and secure authentication.

A free MCP server providing 13 tools for email verification, domain intelligence, and website analysis with no API keys required.

Give AI agents their own email inboxes. Create, send, receive, and manage email entirely via MCP tools.