Dun dun dunning! Churn is scheming... but Dunning is always one step ahead.
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Postmark API Explorer

Postmark API Explorer

Use our API Explorer to send API requests directly to your Postmark server or account.

Before you get started

These API endpoints require server level privileges using the X-Postmark-Server-Token header parameter. Your token can be found on the credentials page in your Postmark server.