Give your workflow a mailbox.

Try a request like this.

Prepare a service reminder postcard for this approved customer record. Show the proof and price, and wait for approval before sending.

Use the REST workflow with enabled tools

1. Have OpenClaw read PostalMuse’s agent guide and API schema. Confirm its active tool policy permits the required HTTP or shell operations.
2. Test with synthetic data in the explicit developer sandbox. Save each draft and mailing ID in your workflow so a retry does not create a second mailing.
3. For live mail, check capabilities first and use customer approval or an existing grant covering the recipient, format, and budget. Keep any schedule in your external workflow.

Prepare a service reminder postcard for this approved customer record. Show the proof and price, and wait for approval before sending.

Use PostalMuse at https://postalmuse.com. Read https://postalmuse.com/skill.md and https://postalmuse.com/openapi.json if you can access them, and check https://postalmuse.com/v1/capabilities before attempting API preparation. First tell me whether this session can use an authorized browser or HTTP tool. If it cannot, help me prepare the text or PDF and direct me to https://postalmuse.com/compose; do not claim to have created a mailing. Ask for missing required details and use only the records I authorize. If live sending is unavailable, tell me and stop; do not substitute a simulated send. Show every proof page and the exact quote before requesting my approval. Do not pay or send without my explicit approval or an existing valid spending grant covering this mailing. Keep credentials private. Reuse the same idempotency key for retries and inspect the existing mailing if its outcome is uncertain.

What’s available today?

OpenClaw distinguishes instructions from callable tools: reading a skill does not enable network access. PostalMuse has no published OpenClaw plugin here, and this setup has not been end-to-end tested in OpenClaw.

PostalMuse provides US 4×6 postcards and US Letter documents up to 20 source pages. No native scheduling, campaigns, international mail, or Certified Mail. An external scheduler or CRM remains outside PostalMuse.

Official OpenClaw platform information →

Setup guidance reviewed September 25, 2026. This page is not an endorsement or official partnership.

You approve the mailing.

Creating a draft does not send it. Check both postcard sides or every letter page, confirm the addresses and exact price, then approve. If your agent cannot inspect the proof, review it yourself.