Communication & Collaboration MCP 服务
Email, chat, messaging, meetings, social channels, and team collaboration.

ActiveCampaign
io.github.ohneben
ActiveCampaign API: ~325 endpoints (v3, SMS, WhatsApp, Segments) as safety-categorized MCP tools.

Apex Contabil
io.github.ogconstrutorasp
Framework MCP do Apex ERP Contábil: CNAEs, jurídico, obrigações, financeiro, marketing e WhatsApp.

Tweetkit X
io.github.nsozturk
Post, delete & read on X (Twitter) using your own logged-in web session — no paid API.

Cli
io.github.noticedso
Search your developer network and trace connection paths via GitHub & LinkedIn.

KitchenSink4Word
io.github.nometalalchemist
Word (.docx) MCP server: 221 operations, live editing, tracked changes, citations, mail merge.

Dechonet Mcp
io.github.node-man
13 security recon tools for AI agents — DNS, SSL, HTTP, email, ports, ASN. Health Score 0-100.

Corresync
io.github.nkiyohara
Local-first mail, calendar, and task MCP with isolated accounts and guarded writes.

Ms Graph Mcp
io.github.nitin27may
Microsoft Graph MCP server — 85 tools for mail, calendar, Teams, files, SharePoint, and Entra ID

Ethereum & EVM Message Signing
io.github.nirholas
Sign Ethereum messages - EIP-191, EIP-712 typed data, Permit2, signature verification and recovery

MCP Registry Monitor
io.github.nirholas
Monitor MCP registry for new servers - Discord Slack notifications alerts
IBM Granite via x402
io.github.nirholas
x402 pay-per-use IBM Granite AI: chat, code, embeddings, analysis, forecasting. Pay USDC per call.
IBM watsonx.ai Granite
io.github.nirholas
IBM watsonx.ai MCP by three.ws: chat, text generation, embeddings, and tokenization.
three.ws Brain
io.github.nirholas
List LLM providers and run chat completions through the three.ws multi-provider router.
Alibaba Cloud DashScope — Qwen
io.github.nirholas
Alibaba Cloud DashScope MCP: Qwen chat, embeddings, and model discovery on your own account.

Telegram Slack Mcp
io.github.nileshpatil6
Read and reply to your personal Telegram chats and all your Slack workspaces.

Imap Mcp Server
io.github.nikolausm
IMAP/SMTP MCP server to search, read, organize, send, reply & forward email for AI assistants

LinkedIn Sales Navigator
io.github.nick-choudhary
LinkedIn Sales Navigator contact and account search from your logged-in browser.

SMTP
io.github.ni-c
MCP server that sends mail over SMTP, gated behind an allowlist and a human confirmation

ntfy
io.github.ni-c
Publish ntfy notifications, read the message cache, and manage users and topic access

OWA Exchange MCP Server
io.github.nhype
MCP server for Microsoft Exchange / OWA — email, calendar, directory, availability

Clippy
io.github.neilberkman
Copy AI-generated content to the macOS clipboard: rich Gmail-ready email drafts, text, and files

PinRAG
io.github.ndjordjevic
MCP RAG: index PDFs, repos, YouTube, Discord, text; optional YouTube vision; query with citations.

Rebar
io.github.navapbc
Event-sourced ticket tracker + Jira reconciler, exposed as a Python library, CLI, and MCP server.

WhatsApp MCP Server
io.github.nakulben
Manage WhatsApp Business templates and send messages via Meta Cloud API