Use when working with Postmark email platform - routes to specific sub-skills for sending emails, processing inbound email, managing templates, or configuring webhooks.

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 outbound webhooks for delivery, bounce, open, click, spam complaint, and subscription change events — including endpoint verification, per webhook statistics, and retry behavior Best practices postmark email best practices Deliverability setup, compliance (CAN SPAM/GDPR/CASL), email design, list management, testing, and sending reliability Outbound and inbound webhooks are different systems postmark webhooks covers outbound event webhooks; postmark inbound covers inbound email webhooks. They run on separate infrastructure and have different retry schedules — do not apply one to the other: Outbound webhooks ( postmark webhooks ) Inbound webhooks ( postmark inbound ) Retries Up to 9 retries over ~ 72 minutes (3 standard + 6 backoff) Up to 10 retries over ~ 10.5 hours Retried on 5xx, 408, 429, network timeouts only — every other 4xx is permanent Any non 200 response Endpoint verification and per webhook statistics are outbound features — see postmark webhooks . 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) or postmark 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 "Verify a webhook endpoint" / "my webhook is unverified" → postmark webhooks "Webhook statistics / failure rate / why is my webhook paused" → postmark webhooks "Webhook retries" → postmark webhooks (outbound events) or postmark inbound (inbound email) "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](https://account.postmarkapp.com/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](https://postmarkapp.com/developer) [API Reference](https://postmarkapp.com/developer/api/overview) [Postmark API for LLMs](https://postmarkapp.com/llms.txt) [Postmark Dashboard](https://account.postmarkapp.com)