Postgrid integrations and automation

Describe what should happen in Postgrid, and when, in plain words. Whenever builds the workflow and runs it on a schedule, on a webhook, or when another app sends an event.

Connection requirements, provider permissions and optional AI usage apply. Read the runtime limits.

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Postgrid on Whenever

About Postgrid

PostGrid provides APIs for automating direct mail and address verification services, enabling businesses to send letters, postcards, and checks, as well as verify and standardize addresses in real-time.

How Whenever connects

Through its API, using the credentials and permissions required by the provider.

Build it from your AI client

Connect Claude, Cursor or Codex to the Whenever MCP server and your coding agent can build and deploy the Postgrid workflow. It runs on Whenever afterwards, on its schedule or webhook, with the chat closed.

Set up the Whenever MCP server