"Multi-user production MCP server for Google Calendar and Sheets" matching MCP servers:

Enables comprehensive Google Meet and Calendar management through Google Calendar API v3 and Google Meet API v2, supporting calendar event creation with Meet links, space management, transcription, recording, attendance tracking, and meeting moderation controls.

Gives MCP clients access to Google Workspace (Gmail, Drive, Calendar, Sheets, Docs, etc.) across multiple Google accounts simultaneously.

Lets LLMs read and manage Google Calendar events.

Enables AI agents to interact with Slack using a user token, providing full access to message search, channel history, DMs, and posting as the user.

All-in-one Feishu/Lark MCP for Claude Code & Codex. 84 tools, 3 auth layers, send-as-user (cookie + protobuf protocol path). Covers IM, docs, bitable, wiki, drive, calendar, tasks v2, OKR, realtime WS events.

An MCP server that connects to Telegram as your real user account and exposes read-only tools to read and search messages, list chats and folders, inspect group info, and download media.

Google Calendar MCP server with natural language scheduling, conflict detection, smart slot finding, complex recurring events, and a Telegram bot interface. Self-hosted, works with Claude Desktop and any MCP-compatible client.

Multi-user Gmail MCP server that enables sending/receiving emails, managing accounts, and searching mail via SMTP/IMAP with per-user isolation and encrypted app passwords.

Enables interaction with Slack workspaces as a user, supporting channel listing, message posting, threading, reactions, and user management via the Slack API.

A Gmail MCP server with native multi-account support, enabling management of multiple Gmail accounts from a single server instance.

Provides natural language control over Google Workspace services (Calendar, Drive, Gmail, Docs, Sheets, Slides, Forms, Tasks, Chat) via MCP, with OAuth 2.1 multi-user authentication.

Integrates Telegram user account with MCP, exposing operations like reading and sending messages, managing chats, and more via stdio or SSE transport.

Enables interaction with Discord using personal user tokens instead of bot applications, allowing for seamless message management and server exploration. It provides tools for reading history, sending messages, and searching across channels and DMs directly through MCP-compatible clients.

Enables safe, multi-account Gmail and Microsoft 365 operations with explicit aliases, including searching, reading, drafting, archiving, labels/categories, and human-reviewed sending via a localhost approval window.

Unofficial local MCP plugin for interacting with Yandex Calendar from Codex. Enables calendar listing, event CRUD, and Telemost meeting creation via CalDAV.

MCP server exposing multiple Google Workspace Gmail accounts to Claude, with support for verified send-as aliases and opt-in sending.

Enables multi-user access to Google Workspace services (Gmail, Calendar, Docs, Sheets, Slides, Drive) via remote MCP with OAuth 2.1 authentication.

Enables interaction with Reddit through a Reddable account, allowing users to fetch posts and comments, reply to discussions, and manage comment visibility using secure API key authentication.

Relays a result screenshot to Slack so you can review a coding agent's output without opening the app.

Local-first MCP server for agents that need to work across multiple Gmail and Microsoft 365 accounts without cloud token storage.