Communication MCP Servers — Page 2

MCP Slack

Secure read-only MCP server for Slack workspaces

Kit.com MCP Server

Agent-optimized MCP server for Kit.com email marketing. 13 composite tools, 100% V4 API.

GBG Loqate - Reach

Verify addresses, email addresses, and phone numbers with confidence scores.

Queue Pilot

MCP server for RabbitMQ and Kafka message inspection with JSON Schema validation

ai.backengine/backengine-mcp

Surface customer & prospect context from Slack, email, transcripts and tickets in any MCP client.

Just Publish

Publish the website you built with AI to a live public URL, straight from chat, with no setup.

Limitguard Lead Verification

Lead validation over MCP: KVK/KBO register, EU VAT, sanctions and email checks with sources.

GuildControl MCP

Safety-first MCP server for Discord with privacy-safe reads, audits, and reviewed administration

SRIFT

Decentralized E2EE P2P file transfer + chat: human to human, human to AI, AI to AI. No accounts.

Agent Email List — Free SMTP Relay for AI Agents

Free transactional email + SMTP relay. Agents self-signup, no API key needed to start.

Bird

Send and receive across email, SMS, WhatsApp, and voice. One API, one contract.

com.dechonet/mcp

30 security tools for AI agents: phishing links, exposure maps, DNS, SSL, PQC, history, pivots.

com.dragapp/mcp-server

AI-powered email & WhatsApp for teams — manage your shared inbox from Claude, Cursor or ChatGPT.

Mailbuttons (mbag.ai)

Governed email for AI agents (Mailbuttons / mbag.ai): sandbox inboxes, policy gate, audit log.

com.mambabuilt/mcp-domain-deliverability-checker

Audit a domain email deliverability via Apify: SPF, DKIM, DMARC, MX, blacklist, catch-all, age.

mosADD — the comms layer for AI agents

Command your AI agents by voice: PTT rooms, channels, direct messages, agent email, memory (mRAG).

com.qmailing/mcp-server

AI agents read & send email, manage mailboxes, domains and webhooks via the QMailing API.

SenderKit

Build and send email, SMS, and push straight from your AI agent.

com.superagnt/email-finder

Email finder + verifier for AI agents: find work emails by name and company, check deliverability.

com.superagnt/lead-enrichment

Lead enrichment for AI agents: email finder, company enrichment, people data, firmographics.

SMS and WhatsApp Messaging

Send WhatsApp, SMS, email or voice to a business with the compliance gate enforced.

VibeKit

Build, deploy & manage hosted apps and chat with their AI coding agents from any MCP client.

Sendsets

Cold email API for AI agents: connect mailboxes, warm up, run campaigns and handle replies.

agentmailkit

Run scheduled LLM-written email digests from local files and feeds. Local-first MCP server.

AI Pensieve MCP

Search and cross-reference local AI chat history with read-only tools and source citations.

Oi

Access Oi Contexts, Workflows, Skills, Guardrails, Connections, and reporting tools.

ProxVanta

Access your ProxVanta AI setup: teams, contexts, workflows, tools, and more.

Agent Mail Gateway

Self-hosted email for AI agents: own IMAP/SMTP mailbox per key, allow lists, calendar invites.

DocuQueue MCP

Generate PDFs and fill PDF forms via AI chat. Works with Claude, ChatGPT, Cursor, and MCP clients.

GoodSender

Free consent-based emailing, blog publishing, and interactive email template design tools

Resend Email MCP

Complete Resend email MCP: full API coverage + debug layer (deliverability, DNS, bounces).

JMRI MCP

JMRI voice/chat control for DCC model railroads

CryptoAgentMail

Hosted email MCP for AI agents with inboxes, send/receive, memory, recovery, and credits.

Switchboard

Self-hosted MCP message bus: agents DM each other, broadcast to channels, and track presence.

Agent Inbox

A real email inbox for AI agents: human-approved sends, untrusted-by-default inbound.

Huddo

Group chat for people and AI agents: join a room by invite link, read, reply, whisper, wait.

Pidgeon

MCP server that gives your AI agent its own email inbox (Pidgeon).

Postfleet

Give an AI agent its own email address: send, reply, read, and wait for mail.

ai.proxyllm/proxyllm-mcp

OpenAI-compatible LLM gateway: models, savings math, key provisioning, autonomous email-OTP signup

ai.radmail/radmail-mcp

Email OS for agents - real-inbox search, triage, commitments, and a verifiable BEC hard-stop.

Salt

Your agent asks humans on Salt and gets answers: messages, tap-to-answer cards, invoices.

ai.sendraven/mcp

Email infrastructure for AI agents: send, read replies as threads, campaigns, per-key limits.

ai.sentfrom/mcp

Email for AI agents: inboxes, send/reply/forward, search, threads, webhooks — 21 SentFromAI tools.

ai.verifox/email-verifier

Verify email deliverability & find business emails (single or bulk) via the Verifox API.

Zihin

Chat with your Zihin.ai agents, list them and load platform skills from any MCP client.

Keeploop

Mail, Calendar, Messages, Notes, Contacts, Slack on your Mac for AI. Remote needs Pro or free trial.

mailsocket

Email inboxes for AI agents: create an inbox, then block until the OTP or magic link arrives.

TruthSpine

Every connected AI chat starts already knowing your project. One checked record, on your computer.