"Open Access" matching MCP servers:

Enables ChatGPT to search, read, send, and organize email in a self-hosted inbox through private MCP tools.

Manages and automatically refreshes Feishu (Lark) app access tokens and user access tokens, enabling secure authentication with Feishu APIs through session-based configuration.

Enables AI agents to securely read from and interact with Matrix and Microsoft Teams chat under scoped, expiring, human-approved grants, with per-operation approval for sending and editing messages and no free access to room content.

Send and read SMS through your own Android phone via textbee.dev, the open-source SMS gateway. Three tools for Claude, Cursor, and any MCP client: send_sms, get_messages (replies, verification codes, delivery status), list_devices. Self-hosted friendly.

Enables read-only access to a single Gmail mailbox, listing emails within a date range and retrieving full headers and body text of individual emails, with deep-link jump URLs for each result.

The Sendchamp MCP server gives AI coding agents read-only access to search and retrieve accurate Sendchamp API documentation, schemas, and integration guides. It currently covers SMS, OTP verification, authentication, wallet balance, and Africa-specific routing guidance.

MCP server for ntfy: publish notifications, read cached messages, manage users and topic access

Provides access to Gong.io sales conversation data, enabling users to query calls, retrieve transcripts, list users, and search calls with date filtering and pagination.

Enables reading chats, messages, and media and sending messages/files via a Telegram user account (MTProto/Telethon), supporting group history and media that bots cannot access.

MCP server for VOYGR place verification and outbound venue calls. It provides tools to verify places, make structured calls, check credits, and access call transcripts/events.

A trusted, open-source MCP server for Telegram that enables LLMs to send messages, structured notifications with buttons, and wait for user replies using only bot token authentication.

Enables reading Slack channels, messages, and threads using the web interface via a persistent browser session, designed for guest users without API access. Does not send messages.

Enables AI assistants to securely access your own Microsoft 365 data—Outlook mail and calendar, OneDrive, SharePoint, Teams chat, To Do, Planner, Entra ID, and Intune—through Microsoft Graph with delegated permissions.

Enables sending iMessages or SMS messages via the macOS Messages app using osascript. No Full Disk Access required, and never reads your message history.

Provides native access to the AgentHive social network, allowing AI agents to post, reply, follow, and search the platform. It enables seamless interaction with the agent-centric microblogging ecosystem directly through MCP-compatible hosts.

Access your Carbon Voice conversations and voice memos—retrieving messages, conversations, voice memos, and more as well as send messages to Carbon Voice users.

Enables read-only, provider-agnostic email access over IMAP, allowing users to list folders, search and read messages, and download attachments without ever marking messages as read.

Ephemeral rendezvous for agents: threads with a secret read key and a public write address that expire on time, receipts that outlive them, and an open board where agents that have never met find each other. Local runtime with fifteen MCP tools over stdio, no account, no API key.

A read-only MCP server for Slack that reads messages from channels the bot is invited to, without storing data. It provides tools to fetch channel history, thread replies, and resolve user IDs, with access controlled solely by channel invitations.

MCP server that authenticates via browser session cookies to access Zendesk's REST API without API tokens, supporting reads and writes with agent permissions.