activecampaign/postmark
/SKILL.md
Use when working with Postmark email platform - routes to specific sub-skills for sending emails, processing inbound email, managing templates, or configuring webhooks.
$ install --global
skillsauthnpx skillsauth add activecampaign/postmark-skills postmarkInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
Security Scan Results
3 of 9 scanners reported clean
Some scanners were skipped, did not run, or reported a non-clean status. Review each row below.
3
Scanners Passed
9
Scanners in report
Clean
TrivyContainer and dependency vulnerability scanner
95%
Clean
SemgrepStatic code analysis for vulnerabilities
95%
Clean
mcp-scan (Snyk)Model Context Protocol security validation
95%
Skipped
Snyk (dep)Open source security scanning
50%
Skipped
Socket.devSupply chain security analysis
50%
Skipped
VirusTotalMulti-engine malware detection
70%
Skipped
CrowdStrikeAdvanced threat intelligence
50%
Skipped
OSV-ScannerOpen Source Vulnerability database check
50%
Skipped
OWASP Dep-Check
50%
Last scanned: Apr 4, 2026, 8:23 AM211.8s1 file scanned
SKILL.md
- name:
- postmark
- description:
- Use when working with Postmark email platform - routes to specific sub-skills for sending emails, processing inbound email, managing templates, or configuring webhooks.
- license:
- MIT
- author:
- postmark
- version:
- 1.0.0
Postmark Skills
Postmark is a transactional email platform built for developers, with 15+ years of deliverability expertise. These skills teach AI agents how to use the Postmark API effectively.
Sub-Skills
| Feature | Skill | Use When |
|---------|-------|----------|
| Sending emails | postmark-send-email | Sending transactional or broadcast emails — single, batch, bulk, or with templates |
| Inbound processing | postmark-inbound | Processing incoming emails via webhooks, building reply-by-email, email-to-ticket, or document extraction |
| Template management | postmark-templates | Creating, editing, or sending with Postmark's server-side Handlebars templates and layouts |
| Webhooks | postmark-webhooks | Setting up webhooks for delivery, bounce, open, click, spam complaint, and subscription change events |
| Best practices | postmark-email-best-practices | Deliverability setup, compliance (CAN-SPAM/GDPR/CASL), email design, list management, testing, and sending reliability |
Quick Routing
- "Send an email" →
postmark-send-email - "Send a batch of emails" →
postmark-send-email - "Send using a template" →
postmark-send-email(template section) orpostmark-templates(to create/manage templates) - "Handle incoming email" →
postmark-inbound - "Process inbound webhooks" →
postmark-inbound - "Create an email template" →
postmark-templates - "Track deliveries/bounces/opens" →
postmark-webhooks - "Set up bounce handling" →
postmark-webhooks - "Set up SPF/DKIM/DMARC" →
postmark-email-best-practices - "Email compliance / GDPR / CAN-SPAM" →
postmark-email-best-practices - "Domain warm-up" →
postmark-email-best-practices - "List hygiene / suppression management" →
postmark-email-best-practices - "Design a transactional email" →
postmark-email-best-practices - "Test email safely" →
postmark-email-best-practices
Common Setup
Authentication
Postmark uses two types of API tokens:
| Token | Header | Scope |
|-------|--------|-------|
| Server Token | X-Postmark-Server-Token | Sending emails, templates, bounces, webhooks, message streams |
| Account Token | X-Postmark-Account-Token | Managing servers, domains, sender signatures |
Get your Server API Token from Postmark Servers.
SDK Installation
Detect the project language and install the appropriate SDK:
| File | Language | Install Command |
|------|----------|----------------|
| package.json | Node.js / TypeScript | npm install postmark |
| requirements.txt / pyproject.toml | Python | pip install postmarker |
| Gemfile | Ruby | gem install postmark |
| composer.json | PHP | composer require wildbit/postmark-php |
| *.csproj / *.sln | .NET | dotnet add package Postmark |
Message Streams
Postmark separates email by intent into Message Streams:
| Stream | Value | Purpose |
|--------|-------|---------|
| Transactional | outbound | 1:1 triggered emails (welcome, password reset, receipts) — default |
| Broadcast | broadcast | Marketing, newsletters, announcements |
Never mix transactional and broadcast email in the same stream — it damages deliverability.
Resources
- Postmark Developer Docs
- API Reference
- Postmark API for LLMs
- Postmark Dashboard
Related Skills
activecampaign/postmark-webhooks
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Use when setting up Postmark webhooks for tracking email delivery, bounces, opens, clicks, spam complaints, or subscription changes — includes webhook configuration, payload handling, and security.
31SKILL.mdUpdated Mar 26, 2026
activecampaign/postmark-templates
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Use when creating, managing, or sending with Postmark server-side email templates — Handlebars syntax, layout inheritance, template validation, and cross-server pushing.
31SKILL.mdUpdated Mar 26, 2026
activecampaign/postmark-send-email
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Use when sending transactional or broadcast emails through Postmark — single sends, batch (up to 500), bulk, or template-based emails with support for attachments, tracking, and message streams.
31SKILL.mdUpdated Mar 26, 2026
activecampaign/postmark-inbound
development
VerifiedTrustedCommunity
Use when processing incoming emails with Postmark inbound webhooks — building reply-by-email, email-to-ticket, document extraction, or any workflow that receives and parses email.
31SKILL.mdUpdated Mar 26, 2026