"Using PostgreSQL with n8n Workflow Automation" matching MCP servers:

Enables AI agents to create private GitHub issues for decisions, send email alerts, wait for human comments, and parse replies so work can resume. Supports guided setup and MCP integration without requiring separate AI API keys or an always-on cloud server.

Email Automation - MCP server providing AI-powered tools and automation by MEOK AI Labs

Self-hosted MCP server that enables reading, sending, and automating Proton Mail via Bridge, with optional SimpleLogin alias management.

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

MCP server for Claude Code CLI that integrates with Google Workspace, enabling management of Docs, Sheets, Drive, Gmail, Calendar, and Apps Script.

Provides OpenCode agents with controlled MCP tools to read, search, export attachments, and draft replies for Outlook emails, with approval workflows.

A production-grade backend that lets LLMs safely operate Gmail, Google Drive, and Calendar through the Model Context Protocol.

Enables HR teams to automate routine workflows, such as employee onboarding, through natural language prompts in Claude Desktop.

Enables automated B2B lead generation and personalized cold email outreach with self-improving campaign monitoring.

A comprehensive MCP server integrating Google Docs, Sheets, Drive, Gmail, Calendar, and Apps Script APIs, featuring unique Apps Script support for AI-driven automation.

Enables listing recent emails, creating drafts, and sending emails through Gmail with a required approval token for send operations.

MCP server that exposes Gmail and SAP tools, enabling natural-language email management and SAP data browsing through a Mistral-powered AI assistant.

Enables natural language management of Gmail through MCP tools for searching, analyzing, summarizing, drafting, and sending emails, with AI reasoning and user confirmation for actions.

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 interact with Mailjet's contact, campaign, segmentation, statistics, and workflow APIs for managing email marketing operations through natural language.

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.

A multi-account, token-efficient MCP server for Google Workspace services including Gmail, Calendar, Drive, Docs, and Sheets. It enables secure management of multiple accounts with compact data retrieval and keychain-backed authentication for efficient workflow automation.

Enables AI-powered email management through Gmail, including search, send, drafts, labels, and an intelligent agent with human approval workflow and optional customer database integration.

Processes PDF emails from Gmail, generates structured surveys using Gemini, and sends HTML replies automatically via a queued workflow.

Enables sending documents (Markdown, PDF, EPUB) directly to a Kindle via Amazon Send-to-Kindle email, with Markdown converted to EPUB using pandoc.