Integrations
PostStack drops into the tools you already use — from no-code automation platforms and the WordPress mailer to Terraform-managed infrastructure and the command line.
CLI
@poststack.dev/cli
Send transactional email, manage domains, list contacts, and rotate API keys directly from your terminal. Perfect for shell scripts and CI pipelines.
npm install -g @poststack.dev/cliZapier
5,000+ app integrations
Trigger Zaps on email.delivered, email.bounced, and contact.created. Send emails, create contacts, and add to segments as actions.
Learn more →Make.com
Visual scenario builder
Same triggers and actions as the Zapier integration, with Make.com's drag-and-drop scenario editor and unlimited operations on paid plans.
Learn more →WordPress
Drop-in wp_mail() replacement
Install the plugin, paste your API key, and every WordPress notification — password resets, WooCommerce orders, contact form submissions — flows through PostStack.
wp plugin install poststackTerraform
Infrastructure as code
Manage sending domains, API keys, and webhook subscriptions via the official Terraform provider. Pin domains and rotate keys from your existing IaC pipeline.
terraform { required_providers { poststack = { source = "poststack/poststack" } } }Vercel Marketplace
One-click setup
Add PostStack to a Vercel project with a single click. Environment variables are wired in automatically and billing rolls into your Vercel invoice.
Learn more →Don't see your tool?
Every integration above is built on the same PostStack REST API and webhook system that's available to all customers. If you want to wire PostStack into something custom, the API reference and webhook docs are the place to start.