API Changelog
Track additions, changes, and deprecations to the Postkit API
A chronological log of changes to the Postkit REST API.
2026-03-20
Initial Release (v1.0)
The Postkit REST API is now available at https://api.postkit.eu/v1.
Resources available:
- Emails -- Send single/batch with scheduling, templates, and tracking
- Domains -- Register and verify with DKIM, SPF, and DMARC
- Templates -- Create, publish, and render Handlebars templates
- Webhooks -- Configure for real-time delivery events
- Suppressions -- Manage bounce and complaint lists
- Inbound Email -- Receive and retrieve parsed incoming messages
- API Keys -- Create and manage with permission scoping
Features:
- Bearer token auth with
pk_live_/pk_test_prefixes - Idempotency via
Idempotency-Keyheader - Cursor-based pagination on list endpoints
- Standard Webhooks HMAC-SHA256 signing
- EU-only data residency
This changelog is updated when API changes ship. For the full API specification, see the API Reference.