postmark-mcp: Official Postmark MCP server by ActiveCampaign — 24 tools to send, template, search, and diagnose

by ActiveCampaign · MCP Server · ★ 64

Last updated: · Indexed by AgentSkillsHub · Auto-synced every 8h

How to install postmark-mcp

git clone https://github.com/ActiveCampaign/postmark-mcp

Taken from the project's README on GitHub.

Security audit verdict: SAFE · quality 77/100

None of the 43 rules matched — no credential harvesting, no data exfiltration, no curl-pipe-shell installer. Scanned against 43 published rules built on the SlowMist agent-security taxonomy, refreshed every 8 hours.

The quality score combines nine heuristic checks of the repo and its README: completeness, clarity, specificity, examples, structure, agent readiness, step-by-step content, instruction quality and security notes. It rates how well the project explains itself to an agent, not the code.

activecampaignaiclaudeemailemail-sendermcpmodel-context-protocolpostmark

Quick Facts

Stars64
Forks19
LanguageJavaScript
CategoryMCP Server
LicenseMIT
Quality Score77/100
Open Issues36
Last Updated2026-11-10
Created2025-06-05
Platformsclaude-code, mcp, node
Est. Tokens~18k

About postmark-mcp

Official Postmark MCP Server      Send emails with Postmark using Claude and other MCP-compatible AI assistants. Features Exposes a Model Context Protocol (MCP) server backed by your Postmark account 24 tools spanning email sending (single + batch), templates (CRUD + validation), message search, delivery diagnostics, bounces, suppressions, stats, server info, and webhooks...

Compatible Skills

These tools work well together with postmark-mcp for enhanced workflows:

  • agent-kit — semantic(0.62)+rare_topics+same_lang+similar_pop+shared_platform (56%)
  • agent-inbox — semantic(0.56)+rare_topics+same_lang+similar_pop+shared_platform (54%)
  • thunderbird-cli — semantic(0.47)+rare_topics+same_lang+similar_pop+shared_platform (51%)
  • react-email-editor — semantic(0.59)+complementary+rare_topics+shared_platform (50%)

postmark-mcp alternative? Top 5 similar tools

Looking for a postmark-mcp alternative? If you're comparing postmark-mcp with other mcp server tools, these 5 projects are the closest alternatives on Agent Skills Hub — ranked by topic overlap, star count, and community traction.

  • email-mcp by codefuturist · ⭐ 145

    Email MCP server with full IMAP + SMTP support — read, search, send, manage, and organize email from any AI as

  • apple-mail-mcp by patrickfreyer · ⭐ 246

    MCP server giving AI assistants full access to Apple Mail - read, search, compose, organize & analyze emails v

  • apple-mail-mcp by sweetrb · ⭐ 110

    MCP server for Apple Mail - read, search, send, and manage emails via Claude and other AI assistants

  • apple-mail-mcp by imdinu · ⭐ 74

    Apple Mail MCP server with full-coverage FTS5 body search. Reliable on large mailboxes where AppleScript-based

  • mcp-mail by shuakami · ⭐ 51

    📧 MCP Mail Tool - AI-powered email management tool | 基于 MCP 的智能邮件管理工具

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How this security grade is produced

Grades come from a rule-based scan built on the SlowMist agent-security taxonomy: 43 published rules, covering credential harvesting, data exfiltration, curl | sh installers and more. It is a first-layer scan, not a manual audit — we say so rather than overstate it.

The scale of the problem is documented independently: Liu et al. (2026), in a study of 31,132 agent skills, report that 26.1% contain security vulnerabilities. Our own full-catalog census is published as a citable open dataset.

Sources & who's responsible:

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