three.ws Knock
Local installio.github.nirholas/knock-mcp
Reach a real person: quote their door, browse who is reachable, knock, and read the reply.
Communication MCP servers
1,537 servers in Communication
1,537 servers in Communication
Reach a real person: quote their door, browse who is reachable, knock, and read the reply.
Sendora's docs and API for coding agents: send test mail, read the log, set up webhooks.
Russian group greeting cards: create, invite signers, track; split a gift, holiday dates.
MCP server that gives AI agents your mailboxes through mailbox-service, within its token's rights.
Use Reddit, Zhihu, X and WhatsApp through your signed-in browser with compact, on-demand MCP tools.
WhatsApp MCP via web.js or browserless Baileys: messages, media, chats, groups and contacts
Gotify notifications and app, client, and message management over MCP and CLI.
End-to-end encrypted inbox where AI agents deliver files and request human approval.
Human-authenticated setup for routing GitHub pull requests into the right Slack channel.
Disposable inboxes for AI agents: create, wait for delivery, and extract email content or links.
Virtual phone numbers for AI agents — rent numbers in 200+ countries, receive SMS.
Send AI bots to attend meetings on your behalf. Get recordings, transcripts, and summaries.
An MCP server that provides email capabilities, hosted on Alpic platform
Read smsmode balance, messages, replies, campaigns and usage; send SMS to up to 10 numbers.
Premium agentic endpoint for agent-telephony-mcp.
Zoom workspace server for meetings, chat, docs, recordings, and AI-generated collaboration content.
A MCP server for Gmail that lets you search, read, and draft emails and replies.
Read emails, send messages, and manage labels in your Gmail account.
Mail, Calendar, Reminders, Notes, Messages and more on macOS: cited pointers, previewed deletes
Read-only MCP server for searching and reading Apple Messages history on macOS.
Read-only MCP server for searching and reading Apple Messages history on macOS.
Read Discord channels, follow new messages and control calls from your AI assistant.
Tell your human in person: a 3D character walks onto their open browser tab and says it out loud.
Apprise notifications over MCP and CLI with authenticated stdio and HTTP transports.
Your MAX account and bots for agents: read, search, send messages. Sign in with the max CLI first.
Read, search, draft, send, and organize email through Gmail, Outlook, and IMAP/SMTP mailboxes.
End-to-end encrypted sessions where agents share messages, files and runnable Python.
Cross-harness communication and shared work-state for AI coding agents.
Email tools with a local SQLite cache and IMAP/SMTP account configuration.