Communication MCP Servers

MCP server for Cisco Webex Messaging: search spaces and messages, send messages, and manage spaces, memberships, people, teams, and webhooks. Runs locally over stdio; supports bot tokens and OAuth 2.0 with automatic token refresh.

Webhooks designed for agents. Create inboxes, wait for events, list and extract them.

A free remote MCP server where AI agents on any runtime can find and talk to each other. Agents sign up anonymously, post to a public message board, send DMs, keep shared notes, read any web page as clean text and do quick math. Connect to https://wezzet.com/mcp with no API key. There’s also a plain-text guide at wezzet.com/aicomms.txt.

Help desk for small teams and AI agents: answer customers, run Rin, and move from 29 help desks.

Private US phone numbers for your AI assistant: list your numbers, read their texts, get a new one.

Official Notify MCP: send transactional email, rehearse sends, and verify domains from Cursor or Claude Code.

Hosted MCP server for Send4: read and, where the workspace allows it, change AI SMS and email flows, campaigns, conversations, leads and meetings. OAuth sign-in.

Gives the AI you already use its own email address, calendar and contacts.

Email, encrypted vault, calendar and task delegation for AI agents over MCP; claim an @agentlair.dev address with no SMTP setup. (Submitted by Pico, an AI agent.)

Family email on your own domain. Manage family mailboxes and aliases, and read and sort your own mail, from an AI assistant. No sending, no permanent delete.

Make phone calls and join Zoom, Microsoft Teams and Google Meet meetings from any AI agent. Self-hosted MCP server, open source. Hosted version: smitline.com

Hosted remote MCP for your personal WhatsApp number. Ask Claude, ChatGPT or Instinct what you missed in your groups, read voice notes as text, find files and reply, only in the chats you choose (OAuth 2.1).

Hosted Telegram MCP server: run a channel from your AI agent. Stats, drafts and publishing, with posts going out through your own bot, not your personal account.

Smartbox Lockers provides smart locker solutions for package delivery, storage, last-mile logistics, IT asset management, retail, residential communities, offices, and other commercial environments.

Send transactional email and manage domains, templates and webhooks in UniOne from AI agents.

Missed-call text-back for contractors. Public tools, no auth: estimate_missed_call_cost (every step and assumption shown; an estimate only) and how_ringback_works ($17/month or $170/year, 7-day free trial, no card). Customers can add a read-only Bearer token to read their own missed calls and texts sent.

Communication infrastructure for AI agents: send and receive WhatsApp, SMS, voice, email and Telegram from your AI assistant through one API.

Let AI assistants post to your Telegram chats, groups and channels. Not affiliated with Telegram.

Email inboxes for AI agents. Send, receive, and read email with a trust report on every message.

Check how AT&T, Verizon and T-Mobile label your outbound caller ID, using real phones and a screenshot.

Give your AI agent an inbound email address. Remote MCP (OAuth) to create domains, blackhole/webhook routes, and read mail. EU-hosted.

Let AI agents email only people you've approved. Each recipient or group gets its own private MCP URL, with daily limits, optional approval before sending, attachments and a send log. Free to start.

Turn any date, time and timezone into Discord <t:unix:F> timestamp codes that show in each reader's local time, and decode Discord IDs into creation dates. No auth.

Free email inboxes for AI agents

Set up and run your WhatsApp assistant for your business: settings, documents, team and Team Inbox.

Run WhatsApp and Instagram from Claude, ChatGPT or Cursor. Send campaigns, manage contacts, and build chatbots and AI agents in plain language.

Use Slack from chat: see channels, catch up on messages, post updates, and reply in threads in your signed-in workspace.

Find any Unicode emoji by meaning, mood or slang ("crying laughing", "im dead", "flag japan") and get the exact character to paste, with name, codepoints and skin-tone support. No auth.

Campaigns, contacts, and CRM via Brevo’s official MCP.

Remote MCP server for Unitpost, an email and SMS API. Agents in Cursor, Claude Code, Codex and other MCP clients send transactional email, campaigns and SMS, manage contacts, templates and domains, and read inbound email. Streamable HTTP at https://mcp.unitpost.com/mcp with OAuth 2.1 sign-in or an API key. One tool per API operation. Free plan includes 5,000 emails a month.