Primary account
Dev dashboard
Test the mailbox, invoices, companies and user scenarios using isolated test data.
Welcome to the sandbox
Test ePošťák before going live.
The same interfaces, safe test data.The development environment mirrors the production APIs and lets you verify the dashboard, ERP integration and Peppol flow without affecting live companies.
Isolated sandboxCheck current service availability using the status link.
- Accounts and data
- Isolated dev workspace
- Peppol network
- Test SMP and test AS4
- Payments
- No billing
Choose what you want to test
Select the surface that matches your integration.
ERP integration
Connector
Connect an ERP using customerRef, select a sandbox company and go from the first payload to delivery evidence.
Multiple companies and automation
Enterprise API
Test Core preflight, sending, inbox, webhooks and customer company management through production-equivalent paths.
UBL transport
SAPI-SK
Verify the compatible flow from token through UBL sending and receiving to the document's technical status.
Quick start
- 1Get accessRequest access by email below.
- 2ConfigureThe operator prepares your account and two test companies. Create your own API key in the portal.
- 3TestSend your first document and verify its status.
- 4Go liveRequest production approval, then configure production companies, keys and endpoints.
Manually prepared sandbox
Request access by email
Access is not created automatically. An ePošťák operator manually creates the account and two synthetic test companies A and B. You then create your own API key in the portal.
Only the exact email for access is required. Company, integration purpose and company ID are optional. Do not send customer companies' tax IDs for the sandbox.
Technical details
Development endpoints
API paths are shared, but production requires separate approval, companies, keys and configuration. Use test keys exclusively in the development environment.
- Enterprise API
https://dev.epostak.sk/api/v1- Connector
https://dev.epostak.sk/api/v1/connector- SAPI-SK
https://dev.epostak.sk/sapi/v1- AS4
https://dev.epostak.sk/as4
Enterprise API and Connector use JSON. SAPI sends ready-made UBL XML documents in the documented format. Authentication uses a Bearer token. Detailed examples and schemas are available in the documentation.