"Simple HTTP server or client implementation" matching MCP servers:

A Python-based MCP server for managing email configurations, sending emails, and reading the latest unread emails.

MCP server for email management that enables reading, searching, drafting, replying to, and sending emails with thread-aware replies and draft-first safety, supporting Gmail API and IMAP/SMTP backends.

An MCP server for sending and receiving emails via IMAP/SMTP, with support for attachments, replies, and display names.

Enables read-only inspection of a Zoho mailbox over a one-shot, outbound-only connection — listing accounts and folders, listing or searching messages, and retrieving message content and attachment metadata — plus bounded parsing of aggregate DMARC report attachments via a separate REST adapter. It performs no writes, sends, deletes, or read-marks, and requires a trusted private configuration envelope for pinned hosts, mailboxes, and credentials.

Enables sending, listing, searching, and reading Outlook emails through Microsoft Graph API with OAuth authentication.

Enables reading and writing email through IMAP and SMTP accounts using natural language via the Model Context Protocol.

Provides AI agents with real email infrastructure, enabling them to create inboxes, send/receive messages, and extract verification codes from incoming mail.

Enables managing multiple Gmail accounts under one OAuth client, with per-account access levels, cross-account search, and read/write operations via stdio or Streamable HTTP.

Professional Proton Mail management with 20+ tools, advanced analytics, and seamless Proton Bridge integration.

An MCP server that enables AI assistants to send emails via SMTP, supporting simple and custom emails with attachments and CC/BCC, plus connection testing.

Streamable HTTP MCP server for Gmail enabling search, read, draft management, and inbox organization.

Enables read-only Gmail access via MCP, allowing users to list and retrieve email messages with query and pagination support.

Streamable HTTP MCP server for Gmail that enables AI agents to search threads, read messages, manage drafts, and organize the inbox via OAuth authentication.

A Python-based MCP server for Microsoft 365 Outlook email operations using OAuth 2.0 Client Credentials Flow, enabling automated email management for autonomous agents.

Fetch fresh leads and verify emails in one MCP server

MCP server for IntoDNS.ai providing 36 free tools for DNS, DMARC, SPF, DKIM, BIMI, DNSSEC, MTA-STS, FCrDNS, blacklist and email security checks. Citation-grade report snapshots with content hashes. No API key required.

An MCP server that exposes a local notmuch email database to an LLM client such as Claude. It is read-first: searching, reading, and understanding mail is always available; writing anything (drafts, tags, exported files) requires an explicit opt-in flag and is confined to clearly bounded locations.

Enables Gmail label management with tools to list, create, delete labels, and modify labels on messages and threads, handling OAuth2 authentication automatically.

Enables AI agents to verify email addresses with catch-all detection, search existing contacts by company domain, and, when no API key is present, provision a human-approved subscription and retrieve the key after payment.

Enables sending and receiving email over generic IMAP and SMTP, with tools for searching, reading, drafting, attaching files, managing folders, and waiting for new messages.