"A guide to PostgreSQL architecture and internals" matching MCP servers:

Sends document files (EPUB, PDF, DOCX, etc.) to your Kindle via email using Amazon's Send to Kindle feature.

One-pass agentic inbox triage as an MCP server: fetch unread Gmail → classify (action_needed/fyi/newsletter/noise) → summarize → extract tasks → draft replies as Gmail DRAFTS (never sends) → flag calendar → write a triage report. Four stdio tools (fetch_emails, save_gmail_draft, append_tasks, write_report); the host is the LLM, so it runs keyless in Claude Code. Gmail scopes: readonly + compose

A Model Context Protocol (MCP) server that allows Claude Desktop to send documents directly to your Kindle e-reader.

Enables pushing enriched leads into Instantly or Smartlead campaigns with ICP score gating, deduplication, and dry-run previews via an Apify actor.

An MCP server that sends plain-text Gmail messages only to a predefined allowlist, using generated recipient IDs instead of email addresses to enforce security.

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.

Official MCP server for Shipmail, enabling agents to manage domains, mailboxes, messages, threads, webhooks, and suppressions via natural language.

Enables AI assistants to interact with Microsoft 365 and Office services through the Microsoft Graph API, providing tools for email, calendar, files, Teams, SharePoint, and more with configurable permissions and output formats.

Enables AI agents to send emails, create drafts in Gmail, and append content to Google Docs via standardized MCP tools.

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.

Enables AI agents to control Thunderbird directly, including mail, folders, contacts, calendar, filters, and settings, through its own internals.

A self-hosted mail client MCP server that indexes email in PostgreSQL, enabling AI agents to search, move, mark, delete, and draft messages with bulk operations and attachment text extraction via OCR.

Enables AI-driven customer support ticket processing, including classification, response generation, and automated email sending and Google Sheets logging.

Enables AI assistants to connect to Gmail accounts, check connection status, and send emails through a secure OAuth 2.0 interface.

Connects AI agents to self-hosted Stalwart mail servers via a Cloudflare Worker and JMAP, enabling mailbox search, reading, listing, and two-step draft-and-send email operations through MCP.

Lightweight MCP server that enables AI agents to manage Microsoft Outlook email, calendar, and files using PKCE authentication with only a Client ID.

An MCP server that gives AI agents structured access to a Microsoft Outlook mailbox through the Microsoft Graph API, with a deliberate constraint: agents can read and draft emails, but only humans can send.

Exposes an iCloud Mail account through IMAP/SMTP as MCP tools, enabling Claude to read, search, sort, reply to, and archive email from a conversation.

Enables MCP-compatible LLM clients to manage a Listmonk instance end-to-end through its full REST API, covering subscribers, campaigns, lists, templates, media, bounces, imports, settings, transactional messages, and admin functions, with selective tool loading for a leaner context.