Communication MCP Servers — Page 16

An AI-to-AI consultation system for complex problem-solving and reasoning, using OpenRouter for model access.

PieterPost lets AI agents prepare, price, review, pay for, and send real letters and postcards through a safe OAuth-powered MCP server.

Encrypted chat for AI agents. Let agents message each other, hand off tasks and ask questions, end to end encrypted.

Provides real-time access to Israeli emergency alerts from the official Pikud Haoref API.

Provides real-time access to Israeli emergency alerts from the official Pikud Haoref API.

Overlay network for AI agents: permanent virtual address, encrypted UDP tunnels, NAT traversal, trust handshakes, and an app store of installable agent capabilities.

Send and receive emails, SMS, and voice calls via Pingram.

Send actionable push notifications to people, ask Questions, receive attributable answers, and hand work to a human over scoped OAuth/MCP.

Remote MCP server for the Pinlyx CRM: 76 tools, 21 resources and 15 prompts so Claude, Cursor, VS Code or ChatGPT can search contacts, read the omnichannel inbox (Telegram, WhatsApp, Instagram, X, email), draft replies, move deals and run outreach sequences over an authenticated Streamable HTTP endpoint.

Sends physical letters and faxes through PixelLetter: hand it a PDF and an address and it is printed, franked and posted, with a test mode that charges nothing.

Virtual phone number platform for AI agents — rent numbers across 200+ countries, receive SMS, and manage the full activation lifecycle

Connect your Plaud recordings to any MCP-compatible AI client. Search recordings, read transcripts, and generate documents without leaving your AI assistant.

Print and send physical mail and postcards to US addresses (USPS), paid per call in USDC on Base via x402 or credit card.

Run real email checks from your AI: 24 blacklists, spoofing/BEC grade, URL redirect tracing, email spam tests, domain age and WHOIS. Free, no account.

Threads tools for AI agents — generate viral posts, download videos, and export profile data from Meta Threads.

Email infrastructure for AI agents. Inbound is parsed, classified, extracted to your schema, and screened for prompt injection before your agent reads a word.

Hosted multi-user MCP server for Microsoft Exchange - including Exchange Server on-premises and hybrid (EWS): 70+ tools for mail, calendar, contacts and tasks over SSE/Streamable HTTP with OAuth 2.0/PKCE.

An MCP server for sending emails via the Postmark service, configured through environment variables.

Publish to multiple social networks with only one MCP

MCP server for posting to X (Twitter) with multi-account support

Send-time gate for messages AI agents draft: check_draft catches leaked secrets, wrong recipients, missing attachments and AI-sounding text in emails, Slack messages or DMs before sending; rewrite_draft fixes tone in your voice.

Open-source multi-agent coordination room with a live hosted instance agents can join.

Send a one-off fax from inside ChatGPT or Claude. Pay-per-use, $2-$4.50 per fax, charged only after delivery. No PromptFax account, no subscription, no API key to manage.

Enables AI models to prompt users for input directly within their code editor for interactive conversations.

A local-only macOS Model Context Protocol server that exposes your Proton Mail account to Claude Desktop and Claude Code via Touch-ID-gated tool calls.

Connect AI assistants to Proton Mail through Proton Mail Bridge. Search and read emails, inspect attachments, and create drafts with attachments. Runs locally; users review and send drafts themselves in Proton Mail.

Access PubNub SDK documentation and API resources for real-time communication applications.

Push notifications and human-in-the-loop approvals for AI agents: ask a question mid-run and get the answer back from a phone lock screen.

Send push notifications via the Pushinator service. Requires an API token from your Pushinator account.

Send push notifications using the Pushover.net service.