Make your next note tangible.

Try a request like this.

Write a brief welcome letter for this new client using only the approved onboarding details. Prepare it for a US Letter page.

Writing help or a CLI workflow

1. Use Gemini to refine your message, then copy it into PostalMuse or upload your completed PDF.
2. For an API workflow, use Gemini CLI with permitted shell/network access and follow the PostalMuse quickstart. Start in the developer sandbox with synthetic data.
3. Review the generated proof and quote before approval. If tools cannot open the proof, ask for a human review instead of assuming the layout is correct.

Write a brief welcome letter for this new client using only the approved onboarding details. Prepare it for a US Letter page.

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?

Gemini CLI documents shell execution; that does not mean every Gemini chat can call PostalMuse. No native Gemini connector is provided, and platform-specific sending has not been verified.

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 Gemini 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.