"OAuth authentication and authorization protocol information" matching MCP servers:

A self-hostable Gmail MCP server that enables Gmail search/read, sending, replies, drafts, labels, and attachment downloads via MCP tools with OAuth authorization. Supports stdio and streamable HTTP transports.

Enables Claude to read, search, send, and manage email across multiple IMAP/SMTP accounts through OAuth 2.1-secured MCP tools.

An MCP-compliant server that exposes Gmail and Google Docs as tools, enabling AI agents to draft, send, and manage emails, as well as create, read, and append to documents through natural language.

An MCP server that exposes Google Docs and Gmail capabilities to LLMs via SSE transport.

Provides MCP tools for searching, reading, and drafting Gmail emails, as well as querying SAP OData endpoints with safe read operations and mock mode.

An MCP server that gives AI agents permission-gated, audit-logged access to private email providers (Proton Mail via Bridge and plain IMAP), running locally with OAuth-based authentication and human-controlled escalation for destructive operations.

An MCP server that provides full email management for Yahoo Mail via IMAP, including tools to list, read, search, delete, archive, flag, and move emails, with secure OAuth authentication and support for local and remote deployments.

Enables sending emails and creating drafts through the Gmail API with OAuth 2.0 authentication.

Enables reading Gmail emails through the Model Context Protocol, supporting listing, searching, and retrieving email details with OAuth 2.0 authentication.

Enables users to manage their Yahoo Mail account through natural language, including listing, reading, searching, deleting, archiving, flagging, and moving emails via IMAP. Supports both local Claude Desktop integration and remote access with secure OAuth 2.0 authentication.

Enables AI assistants to manage multiple Gmail accounts simultaneously with built-in OAuth authentication, supporting email reading, sending, drafts, labels, and account management.

Multi-account Google MCP server providing read access to Gmail and Calendar via stdio. Supports secure authentication for personal and work accounts with OAuth and keychain token storage.

Exposes the full Campaign Monitor v3.3 API as 117 tools for managing campaigns, lists, subscribers, and more, with OAuth authentication.

Enables Gmail operations such as listing, searching, and reading messages, as well as drafting and sending emails, with OAuth authentication and guarded tool enablement.

AI-native email marketing platform built for agents. Control campaigns, automations, contacts, templates, and analytics via MCP with OAuth authentication.

Enables AI agents and Telegram bots to read and send Gmail messages via MCP with OAuth authentication.

Enables MCP-compatible AI agents to create Gmail drafts, send emails, and append content to Google Docs with OAuth-secured authentication.

Enables natural language control over Google Workspace (Gmail, Drive, Calendar, Sheets, Slides, Tasks) through secure OAuth 2.1 authentication, with vault-level security and multi-user isolation.

Connects Claude to Microsoft 365 Outlook and Google Gmail APIs for email search, invoice detection, attachment handling, folder/label management, and draft creation. Uses Anthropic OAuth for secure authentication.

Enables appending content to Google Docs and creating Gmail drafts via a lightweight MCP-style server with OAuth authentication and human-in-the-loop approval.