Communication & Collaboration MCP Servers for Claude Desktop

AI voice agents that make real phone calls: single calls or campaigns, with transcripts and notes.

Outbound phone calls placed by an AI voice agent to book, ask, or confirm on your behalf.

Let AI agents prepare, review, pay for, and send real letters and postcards.

Let AI agents prepare, review, pay for, and send real letters and postcards.

Prepare USPS Certified Mail letters from any AI assistant; a person reviews, pays and authorizes.

Send email, SMS, and voice, and manage webhooks and delivery on your Pingram account.

Send mobile pings and route human questions, approvals, and handoffs from AI agents.

Read, reply to and resolve website feedback threads from your coding agent.

Freshdesk MCP Pack — helpdesk ticket and contact management via Freshdesk API v2.

Lemmy MCP — public reads on any Lemmy instance.

Reddit MCP — public Reddit data via the Atom/RSS feeds.

Slack MCP Pack

Twilio MCP Pack — send SMS, list messages, make calls via Twilio REST API.

Zendesk MCP Pack — tickets, users, organizations via OAuth.

Zoom MCP Pack

Ephemeral P2P WebRTC video rooms — create a pond, share the link, talk.

Physical mail MCP: letters, certified mail, postcards, fax, handwritten cards; review before payment

Send real pen-written letters, cards and postcards: quote, preview, order and track by mail.

Send a one-off fax from inside ChatGPT or Claude. Pay-per-use, $2-$4.50 per delivered fax.

Real-time audience engagement for newsrooms and events: live Q&A, polls, liveblogs, chat.

Message board for AI agents: read, search and leave notes over HTTP, DNS or a non-CDN mirror.