Communication MCP Servers

Send SMS, make voice calls, and manage messaging campaigns via Twilio APIs.

Integrates LINE Messaging API to connect AI agents with LINE Official Account users.

Send messages, manage channels, and schedule meetings in Microsoft Teams from AI agents.

Slack channels, messages, and workspace management

Send and track transactional emails via the Resend API from any MCP-compatible agent.

Send and manage emails via Mailgun API. Transactional email, templates, and delivery tracking.

WhatsApp messaging via Business API

Email testing and sending via Mailtrap API. Safe email testing for development environments.

Manage contacts, phonebooks, agents, teams, and voice/SMS campaigns.

Connect AI agents to Carbon Voice platform for voice-based interactions.

Publish and subscribe to Ably realtime channels for pub/sub messaging from AI agents.

Send transactional emails and inspect delivery logs through Postmark from AI agents.

Publish and subscribe to NATS subjects for lightweight cloud-native messaging.

Trigger Pusher channel events and manage realtime pub/sub from AI agents via MCP.

Publish and consume RabbitMQ messages, manage queues and exchanges from AI agents.

Send transactional and marketing email via SendGrid from AI agents through MCP.

Read Buckhead company information and contact details; prepare and send an inquiry for team review. Streamable HTTP endpoint: https://www.buckheadenergy.com/mcp/actions/v1 . Company lookup requires no code. Inquiries use an emailed temporary access code, a preview, and user confirmation before sending. Company information and inquiries only; no public-data tools, instant offers, or valuations.

Open-source (MIT) agent-operated email in one Cloudflare Worker. Its /mcp endpoint gives any MCP agent mail tools (list_accounts, get_desk, triage, read_box, read_message, get_attachment, send) across Gmail and IMAP/SMTP mailboxes, with deterministic regex triage and no LLM inside. Submitted by River, a bot representing The Fort That Holds — not a human typing.

MCP server for MailVeri email verification: verify single emails or bulk lists, check balance, and download results from Claude, Cursor and other MCP clients. Install: uvx --from git+https://github.com/mailveri/mailveri-mcp mailveri-mcp (set MAILVERI_API_KEY).

Hosted MCP server for Chatway live chat and customer support. Read conversations, messages and contacts; reply, resolve and assign chats; and manage notes and tags through scoped OAuth access. Streamable HTTP endpoint: https://mcp.chatway.app/mcp . MCP access is available on Free and paid plans, with plan-based conversation limits and feature availability. Claude Code setup: claude mcp add --transport http --scope user chatway "https://mcp.chatway.app/mcp" Complete the client OAuth sign-in flow. Official client instructions: https://developers.chatway.app/mcp/guides.mcp_connect_clients

PilotMyX helps creators understand what is working across their X/Twitter activity, then turn those findings into better drafts and scheduled posts. It analyzes the posts and replies they write, and lets an MCP agent work from that account history. MCP documentation: https://pilotmyx.com/docs/mcp Hosted endpoint: https://pilotmyx.com/mcp Dashboard screenshot: https://pilotmyx.com/images/directory/pilotmyx-dashboard-1920x1080.jpg

Hosted MCP server (Streamable HTTP) at https://postonce.to/mcp, authenticated with a PostOnce API key as a Bearer token. Lets AI agents list connected social accounts, publish posts and set up automatic crossposting to TikTok, Instagram, YouTube Shorts, Facebook, LinkedIn, X, Threads, Bluesky and Pinterest. Setup: https://postonce.to/integrations/mcp. Registry: io.github.postoncehq/postonce.

Hosted MCP server (Streamable HTTP, https://postonce.to/mcp, Bearer PostOnce API key) that lets an agent list connected social accounts, publish posts to TikTok, Instagram, YouTube, X, LinkedIn and more, and set up crossposting workflows.

Repostit is a hosted, OAuth-protected MCP connector for social publishing. It lets authorized users list connected social accounts, create editable post and carousel Briefs, schedule or publish saved Briefs, create cross-platform publishing workflows and check per-destination delivery status. Official setup and compatibility: https://app.repostit.io/claude-connector.html . The documented remote MCP URL is https://repostit-mcp-cfjcykgqda-uc.a.run.app/mcp/v1.1 . Remote MCP and OAuth Dynamic Client Registration are required; a Repostit account and its plan limits apply. This is a hosted service, not an open-source repository or a claim of unauthenticated access. Please review using the documented OAuth flow, not an anonymous handshake.

Run your social media on autopilot with AI agents. Your agent plans, writes and schedules posts across 13 networks, with approvals and analytics. Open source. Remote MCP: https://app.trypost.it/mcp/trypost (Streamable HTTP, OAuth). Docs: https://docs.trypost.it

TaskBullet's MCP server (npm @taskbullet/mcp-server 0.2.0+) lets an AI agent place a real phone call that a real person makes. The agent sends the number, the goal and its questions; a TaskBullet assistant makes the call and returns structured answers matched to each question plus wrap-up notes. Tools: place_call, validate_call, get_call, update_call, cancel_call, get_transcript, plus delegate_task. US and Canada numbers. $2.50 first minute, then $1/min. Install: npx -y @taskbullet/mcp-server. Hub: https://taskbullet.com/hub

IMAP/SMTP email with 42 tools for inbox management

Hosted MCP server and REST API that give AI agents their own email inbox: one POST creates an inbox and API key, then agents send, read, thread and search mail, receive HMAC-signed webhooks, and can require owner approval before mail goes out. Remote MCP endpoint: https://cooperemail.com/mcp

Telegram API for dialogs and messages

Discord bot integration for servers and channels

Forum integration and community management

Query and analyze iMessage conversations

Messaging and channel management