Communication MCP servers

Email for AI agents: send and receive as Markdown with configurable human oversight (monitor, gate or fully autonomous).

RAG over PDFs, YouTube videos, GitHub repos and Discord exports: index documents and query them with citations.

Check an email before an AI agent sends it: returns send, ask-a-human or block, with machine reason codes and prompt-injection detection.

Phone calls, SMS, fax, translation, text-to-speech, audiobooks, image, video, music and text generation, and document extraction, paid via Lightning (L402).

Sequenzy email marketing automation: manage subscribers, lists, segments, templates, campaigns, sequences, transactional emails and analytics.

WhatsApp Business tools: send messages, automate workflows, run campaigns and manage CRM.

Message queue that lets AI coding assistants message each other across sessions and machines. Self-hostable.

Mailbox + wake system for AI agent teams: letters always land, right agent wakes, quiet otherwise.

Give your AI agent an identity it owns: email inbox, US phone number, SMS, voice, and a vault.

Voice Calls, SMS, and WhatsApp for Claude Code with cross-channel context sharing.

Python-based MCP tool providing a comprehensive set of functions for managing contacts, phonebooks, agents, teams, campaigns, and other CallHub resources.

Self-hosted Slack bot: mention it and Claude Code or Codex investigates CloudWatch logs, runs tests and opens PRs, with credentials held by an MCP server.

Drive the Cursor agent from Telegram, Discord, or GitHub — with images and voice notes.

Email read tracking via Gmail: send tracked emails and check whether they were opened, with open count, device and timing.

Build, edit, and deploy Telegram bots on FlowCastle's hosted visual flow platform.

Send SMS, query delivery reports, manage senders and blacklists, and register and check İYS (Turkish consent registry) records via the iletiMerkezi API.

Encrypted local memory for Claude Code Telegram bots: captures both sides of conversations, with SQLCipher encryption and CJK-friendly full-text search.

Physical mail API for AI agents: send letters, certified mail, postcards and batch mailings with cost previews, approval controls, tracking and webhooks.

Local Maildir access via notmuch: full-text search, tag filtering, threads, attachments and unanswered-mail tracking, with optional drafts and tagging.

Read and write Slack with session tokens — no OAuth, no bot, no admin approval.

Secure read-only MCP server for Slack workspaces

Make phone calls and join Zoom, Teams and Google Meet meetings from any AI agent. Self-hosted.

Give AI random access to video: timestamped contact sheets + zoom into any start/end range.

Your own WhatsApp as an MCP server: read, search and send from any MCP client.

Official MCP server for WapiSender — send WhatsApp messages, manage flows, contacts, and instances from MCP-compatible clients.

Read, search, and send personal WhatsApp messages from any MCP client, behind a send-confirm gate.

WhatsApp MCP for macOS - Read messages from local DB, send via WhatsApp Web.

Model Context Protocol server for WhatsApp, powered by Zaileys — let AI agents send messages, media, polls, and read chats from your WhatsApp. Zero-config: attach to any Zaileys client in one line, or run standalone.

Telegram on your own account: read, search, send and press bot buttons. Writes need your approval.

Convert Markdown into formatted documents for Google Docs, Word, Slack, OneNote, email and plain text using templates.

Policy proxy that refuses forbidden tool calls, stopping prompt-injection exfiltration and forbidden data combinations across Slack, Drive, GitHub and more.

ZeroDB agent-memory MCP — 18 tools: memory + write-back to Slack, Gmail, Calendar, GitHub.

Provision dedicated real-SIM US phone numbers, receive and poll inbound SMS, and extract OTP codes for phone verification.

Kudosity SMS, MMS and WhatsApp messaging: send messages, get delivery reports and replies, manage contacts and lists, configure webhooks and check balance.

Utility API tools for agents: schema generation, text extraction, token counting, regex and cron building, prompt optimization, web summarization and more.

Control an OBSBOT Tiny 2 webcam over USB: pan, tilt and zoom, subject tracking, presets, focus, exposure and white balance, snapshots and recording.

Schedule reminders for AI agents via email, webhook, Slack, Discord, Telegram, or Google Calendar.

Privacy and approval gateway between AI assistants and Gmail, Drive, Slack, Salesforce, Jira and more: human approval for sensitive reads and writes, local PII detection and an audit log.

Read and send email, and manage mailboxes, custom domains and webhooks via the QMailing API.

Full Resend email API coverage plus diagnostics: deliverability analysis, DNS troubleshooting, email inspection, bounce explanations and account audits.

Send physical mail with Solana cryptocurrency - AI agents can send real letters worldwide

Public Telegram channels without a user session: channel profiles, posts with view and forward counts, discussion threads and recommended channels.

Manage Website Toolbox forums via the Forum REST API: categories, topics, posts, users, user groups, conversations, moderators, tags and page views.

Give AI agents an address on fmsg, an open federated messaging protocol: inbox, threads, replies, reactions, attachments and waiting for new messages.

Two-way WhatsApp notifications for AI agents: send messages, ask questions with tap-to-answer buttons and check replies, without a Meta account.

Send and read SMS through your own Android phone via textbee, the open-source SMS gateway, including replies, codes and delivery status.

Argentine business automation: Mercado Pago, AFIP/ARCA, WhatsApp, banking, shipping (7 packages).

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