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The Enterprise DNA directory

MCP Servers

Model Context Protocol servers. The standard way for any agent to read or write to any system.

Email and chat: Read, sort and send email and team messages. 835 MCP servers for email and chat in this directory. Source-reviewed guides come first.

24 tools on this page

MMCPlowCatalogue

06ketan/substack-ops

Various

Standalone Substack CLI + 26-tool MCP server. Your IDE drafts the replies. Zero AI API keys.

★ 0repo activity 5mo ago
open-sourceMITPython

Best for: Developers who want to manage Substack from their IDE without AI dependencies

MMCPCommslowCatalogue

AbdelStark/nostr-mcp

Various

A Nostr MCP server that allows to interact with Nostr, enabling posting notes, and more.

★ 37repo activity 1y ago
open-sourceMITTypeScript

Best for: Developers needing a simple MCP interface for Nostr note posting

MMCPCommslowCatalogue

adecubed/gigamail

Various

Mail for AI agents ( and humans). MCP server giving Claude (or any agent) safe, permission-controlled access to email (Microsoft Graph + IMAP), calendar and your knowledge files. T

★ 5repo activity 1mo ago66/100
open-sourceAGPL-3.0Python

Best for: Teams using AI agents that need secure email and calendar access

MMCPCommslowCatalogue

AgentDM

ai.agentdm

AgentDM Grid API endpoint. Connect any MCP-compatible AI agent to send and receive direct messages. Supports OAuth 2.0 and API key authentication.

open-source

Best for: Developers building multi-agent systems with MCP who need secure direct messaging between agents.

MMCPCommslowCatalogue

AgentDM: Agent to Agent Communication Platform

ai.agentdm

Agent communication platform for agent to agent messaging via MCP. Messages, channels, skills.

open-source

Best for: Developers building multi-agent systems that need structured, protocol-based inter-agent communication.

MMCPCommslowCatalogue

agenticmail/agenticmail

Various

Email, SMS & phone-call infrastructure for AI agents — send and receive real email and text messages, and place agent-driven outbound voice calls, all programmatically

★ 135repo activity 4mo ago
open-sourceMITTypeScript

Best for: Developers building AI agents that need to communicate via email, SMS, or voice calls

MMCPCommslowCatalogue

agentmail-to/agentmail-mcp

Various

Email for AI agents: create inboxes on the fly to send, receive and act on email.

Alternative to Elie222 Inbox Zero

★ 66repo activity 1mo ago74/100
open-sourceMITTypeScript

Best for: Developers building email-capable AI agents

MMCPCommslowCatalogue

agentmail-toolkit/mcp

Various

💬 - An MCP server to create inboxes on the fly to send, receive, and take actions on email. We aren't AI agents for email, but email for AI Agents.

★ 74repo activity 5mo ago
open-sourceTypeScript

Best for: Developers building AI agents that require programmatic email send/receive functionality

MMCPCommslowCatalogue

AgentTrust — Identity & Trust for A2A Agents

ai.agenttrust

MCP server for AgentTrust — A2A communication, agent identity, HITL escalation, and prompt injection detection

★ 1repo activity 6mo ago
open-sourceMITJavaScript

Best for: Developers building multi-agent systems that need built-in identity, escalation, or prompt injection defenses

MMCPCommslowCatalogue

aisenseapi/aamio-python

Various

Ephemeral rendezvous for agents: threads with a secret read key and a public write address that expire on time,

★ 0repo activity 1mo ago60/100
open-sourceMITPython

Best for: Developers needing temporary, key-protected message channels between agents.

MMCPCommslowCatalogue

aitit-inc/leadace

Various

AI sales rep for Claude Code. Finds prospects, researches each company, writes and sends outbound email from your own inbox, and learns from every rejection. Self-hostable (Cloudfl

★ 3repo activity 1mo ago64/100
open-sourceTypeScript

Best for: Developers building self-hosted AI sales outreach tools

MMCPCommslowCatalogue

Albretsen/MCPEmails

Various

Hosted email MCP server for AI agents. Connect Gmail, Fastmail, iCloud, or IMAP to Claude, ChatGPT, Cursor, and any MCP client.

★ 5repo activity 1mo ago66/100
open-sourceAGPL-3.0TypeScript

Best for: Developers building email automation into AI agent workflows

MMCPlowArchivedCatalogue

alexcloudstar/makers.page-mcp

Various

Local MCP server that drafts channel-native X posts from your coding agent with human approval. Draf

open-source

Best for: Developers who want coding agents to draft X posts while retaining manual control

MMCPCommslowCatalogue

andrewchmr/mxprobe

Various

Email verification for AI agents: send, hold or kill with the reason. CLI, MCP server and hosted API.

★ 2repo activity 1mo ago64/100
open-sourceMITTypeScript

Best for: Developers building AI agents that need to check email deliverability risk before sending

MMCPCommslowCatalogue

anpekesen/namegender-mcp

Various

Model Context Protocol server for the NameGender API: gender from names, emails and usernames, with probability, sample size and source on every answer.

★ 0repo activity 1mo ago58/100
open-sourceMITJavaScript

Best for: Developers who need quick name-based gender guesses inside MCP-compatible AI tools.

MMCPCommslowCatalogue

anypost/emailmd

Various

Render markdown into email-safe HTML

★ 1,361repo activity 2mo ago84/100
open-sourceMITTypeScript

Best for: Developers building email tooling with Markdown

MMCPCommslowCatalogue

arbengine/mailbox-mcp

Various

Official MCP server for mailbox.bot — physical postal mail API for AI agents.

★ 1repo activity 4mo ago
open-sourceMITJavaScript

Best for: Developers building AI agents that need to send or receive physical postal mail

MMCPCommslowCatalogue

areweai/tsgram-mcp

Various

TSGram - Telegram MCP Server for local Claude Code integration - debug and vibe code on the go!

Alternative to Lharries Whatsapp Mcp

★ 92repo activity 1y ago
open-sourceMITJavaScript

Best for: Developers who want to debug or experiment with code using Claude Code from a mobile device via Telegram

MMCPCommslowCatalogue

Atomic-Mail/atomic-mail-agentic

Various

Let your agents read, send, and react to email autonomously, without human involvement

Alternative to Elie222 Inbox Zero

★ 267repo activity 1mo ago78/100
open-sourceMITTypeScript

Best for: Developers building email-automation agents in TypeScript

MMCPCommslowCatalogue

bababoi-bibilabu/agent-mq

Various

Message queue for AI coding assistants. Let your AI agents talk to each other.

★ 1repo activity 7mo ago
open-sourceMITPython

Best for: Developers prototyping multi-agent coding assistants who need a simple message broker

MMCPCommslowCatalogue

belaytzev/Telebrief

Various

Personal digests from Telegram channels and chats: summarizes threads, extracts key points, and delivers a clean daily/weekly brief with links and context.

Alternative to Telegram

★ 21repo activity 23d ago70/100
open-sourceMITPython

Best for: Developers who want a self-hosted Telegram digest bot for personal use.

MMCPlowCatalogue

Beltran12138/wecom-docs-mcp-server

Various

MCP server for WeCom (Enterprise WeChat) document operations — create, read, edit Docs and Smartsheets. Fills the doc-CRUD gap in the WeCom MCP ecosystem.

★ 2repo activity 6mo ago
open-sourceMITPython

Best for: Developers building AI-driven document automation for enterprise WeChat users

MMCPCommslowCatalogue

BigCactusLabs/dead-letter

Various

Convert .eml email exports to Markdown with YAML front matter

★ 4repo activity 3mo ago
open-sourcePython

Best for: Developers who need to batch convert .eml files to plain-text Markdown for archival or indexing

MMCPlowCatalogue

bluetieroperations-create/blackwall-mcp

Various

BLACKWALL MCP server — a pre-action risk check your AI agent calls before any irreversible action (send email, move money, run SQL, delete data).

★ 0repo activity 2mo ago60/100
open-sourceJavaScript

Best for: Developers building AI agents that perform irreversible actions