MCP Servers 563

Authenticated email gateway for AI agents — per-agent inboxes, HITL approval, SPF/DKIM verified.

Flexible Graphrag

io.github.stevereiner/flexible-graphrag

B◆ advisory

Python, LlamaIndex, LangChain, 15 Property Graph, 4 RDF , 10 Vector, OpenSearch, Elasticsearch, Alfresco, Nuxeo DBs.

Jmap

io.github.wyattjoh/jmap-mcp

B◆ advisory

A Model Context Protocol (MCP) server that provides tools for interacting with JMAP (JSON Meta Application Protocol) email servers.

Wa Llm

io.github.ilanbenb/wa_llm

B◆ advisory

A WhatsApp bot that can participate in group conversations, powered by AI.

Spring Ai

io.github.eazybytes/spring-ai

C◆ advisory

From Java Dev to AI Engineer: Spring AI Fast Track

Notifykit

io.github.sathergate/notifykit

B✓Verified

Unified notifications for Next.js.

three.ws Notifications

io.github.nirholas/notifications-mcp

A✓Verified

Read the inbox, mark items read, manage delivery preferences, and register Web Push devices.

Email

io.github.codefuturist/email-mcp

A✓Verified

IMAP/SMTP email MCP server — 47 tools, IMAP IDLE push, multi-account, AI triage.

Technocore Chat

io.github.flop-labs/technocore-chat

A✓Verified

Shared rooms and durable notes for agents over plain HTTP: rendezvous, hand-off, coordination.

Chat Ui

io.github.ai-ql/chat-ui

B◆ advisory

Single-File AI Chatbot UI with Multimodal & MCP Support: An All-in-One HTML File for a Streamlined Chatbot Conversational Interface

Email Inbox API + Sending by Sendmux

io.github.Sendmux/sendmux-mcp

A✓Verified

AI email inbox and sending tools with attachments, search, live events, and webhooks.

MCP server for Gmail with OAuth2 (personal) and service account (Workspace) support.

MCP server for Slack — read/write messages, manage threads, and react to messages.

MCP server for Twist team messaging — manage channels, threads, and messages.

Discord MCP

io.github.cappyeo/discord-mcp

A✓Verified

Caller-owned Discord operations for AI agents with 208 typed tools and verifiable guild builds.

Memcord

io.github.ukkit/memcord

B◆ advisory

🧠 Self-hosted, privacy-first MCP server for long-term AI memory — save, search & summarize Claude/ChatGPT chat history locally.

Agent Inbox

io.github.gsd-build/agent-inbox

C◆ advisory

Give any AI agent a disposable email inbox in one tool call.

Apple Mail MCP

io.github.imdinu/apple-mail-mcp

A✓Verified

Apple Mail MCP server with full-coverage FTS5 body search, reliable on large mailboxes.

Postmark

io.github.activecampaign/postmark-mcp

B◆ advisory

Official Postmark MCP server by ActiveCampaign — 24 tools to send, template, search, and diagnose transactional email from Claude, Cursor & other AI assistants.

Slack Explorer MCP

io.github.shibayu36/slack-explorer-mcp

B✓Verified

MCP server specialized in retrieving information from Slack messages and threads

Fast Telegram

io.github.leshchenko1979/fast-mcp-telegram

A✓Verified

Multi-tenant Telegram gateway for AI agents — HTTP+stdio, 8 tools, MTProto User API

Kiro Discord Bot

io.github.nczz/kiro-discord-bot

B◆ advisory

Discord control plane for project-bound ACP agents (Kiro CLI/OMP) with MCP policy, cron/audit, and A2A over NATS/JetStream.

Telegram (mcp-telegram)

io.github.mcp-telegram/mcp-telegram

A✓Verified

MCP server for Telegram userbot — messages, media, reactions, polls & more.

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