Help & Documentation
Download guides for your team, explore API specs, and find everything you need to integrate with Postally.
Documentation
API Specs (JSON)
Machine-readable specifications available via the API. Useful for dynamic integrations.
Template Specs
Dimensions, safe zones, and CSS support for all postcard formats.
Test Mode Guide
How test mode works across mailpieces, billing, and webhooks.
API Versioning
Version strategy, deprecation policy, and breaking change rules.
Address Verification
Coverage by country, features, and limitations.
Need help?
Contact us at support@postally.ca for integration support, custom requirements, or enterprise inquiries.