Turn the right words into real mail.

Try a request like this.

Turn these bullet points into a warm, concise customer thank-you. Give me a postcard version and a one-page letter version.

Draft in ChatGPT. Review in PostalMuse.

1. Ask ChatGPT to write or refine your message using the facts you provide. Choose a short postcard or a longer letter.
2. Copy the finished text into PostalMuse or upload a US Letter PDF. If your session has a separately configured and authorized browser/API tool, it can assist with preparation; ordinary chat alone does not supply that access.
3. Inspect both postcard sides or every letter page and the final price in PostalMuse before paying.

Turn these bullet points into a warm, concise customer thank-you. Give me a postcard version and a one-page letter version.

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?

PostalMuse does not currently publish a ChatGPT plugin or MCP server. OpenAI documents plugin/MCP integrations, but PostalMuse’s REST schema is not a ready-to-install ChatGPT connector. Custom tool setup and end-to-end compatibility testing are separate work.

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 ChatGPT 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.