Mail by Pony
ChatGPT pluginWrite letters. Send real mail.
Prepare ordinary personal correspondence as printed letters. Create and revise drafts, choose print styles, view exact PDF proofs, and check your order history.
Sign in to your Mail by Pony account to access your letters. Supply sender and recipient addresses in conversation and review the exact proof, addresses, and price. When you ask to send, Pony provides a Stripe-hosted payment link. You can also finish on the Mail by Pony website.
Printing and mailing are handled manually for U.S. domestic addresses. Handwriting styles are printed fonts. Standard letters do not include tracking or a guaranteed arrival date. Do not submit medical records, government identifiers, payment-card details, passwords, secrets, or other highly sensitive content. This service is not suitable for deadline-sensitive legal notices.
Customers may fund a prepaid USD balance and separately authorize an assistant or API key to send within their chosen limits. Connecting an assistant does not grant spending permission. There are no subscriptions, automatic top-ups, or fallback card charges. Developer documentation is available at https://www.mailbypony.com/developers.
Mail by Pony is #11,145 of 13,927 ChatGPT plugins by placement, up 914 places in a week.
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Productivity2,760th of 3,653 by placement
Example prompts
- “Help me write a thank-you letter and show me the print preview.”
- “Open my saved letters so I can finish a draft.”
- “Check the status of my Mail by Pony orders.”
Skills
send-letter
Write letters with Mail by Pony, check the exact print proof, then send them from a prepaid balance or a one-click payment link.
- Categories
- Made by
- JARED FRANCIS LONG · Website
- Sign-in
- On Install
- Capabilities
- Read, Write
- Availability
- Available
- Version
- 0.8.0
- Keywords
- letters, mail, printing, correspondence
- Created
- October 26, 2026
- More info
- Sponsorship
- Promote this plugin