getpoststack/mcp

Overview

An MCP server that wraps the PostStack Email API, exposing 84 tools, 5 prompts, and 5 resources for AI agents. It enables agents to send, receive, and manage emails programmatically through the Model Context Protocol.

Best for

Best for
Developers building AI agents that need to send, receive, or manage email through the PostStack API.

Use cases

• Automate email sending and receiving from AI agents
• Integrate email workflows into agentic applications
• Manage email resources like threads and attachments via MCP

How to use

Install

npx @poststack.dev/mcp --print-config claude-desktop

Tools exposed

• send_email
• send_batch_emails
• list_emails
• get_email
• cancel_email
• reschedule_email
• lint_email
• preview_email
• validate_email
• validate_email_batch
• create_contact
• list_contacts
• get_contact
• update_contact
• delete_contact
• unsubscribe_contact
• get_contact_by_email
• get_contact_activity
• get_engagement_summary
• search_contacts

Tested with

Claude Desktop, Claude Code, Cursor, Windsurf, Continue, VS Code

Example client config

{\n	"mcpServers": {\n		"poststack": {\n			"command": "npx",\n			"args": ["-y", "@poststack.dev/mcp"],\n			"env": {\n				"POSTSTACK_API_KEY": "sk_live_your_api_key_here"\n			}\n		}\n	}\n}

Notes

An MCP server that wraps the PostStack Email API, exposing 84 tools, 5 prompts, and 5 resources for AI agents. It enables agents to send, receive, and manage emails programmatically through the Model Context Protocol.

0 stars on GitHub. Last updated 2026-05-27. Licensed MIT.

Use cases

• Automate email sending and receiving from AI agents
• Integrate email workflows into agentic applications
• Manage email resources like threads and attachments via MCP

Pros

• Large set of 84 tools for granular email operations
• Built on the standard MCP protocol for agent interoperability
• Written in TypeScript for type safety and modern tooling

Cons

• Requires a PostStack API key and account to use
• No community stars or activity visible on the repository
• Limited to email operations only, not a general-purpose MCP server

Indexed from awesome-mcp-servers-punkpeye and enriched against its public facts.