# Piloxa > Piloxa — the physical-mail action layer for AI agents. Prepare, purchase, send and track USPS Certified Mail to any U.S. address. Human approval is required before payment or mailing. Piloxa prepares USPS Certified Mail from a letter or PDF and gives the person a review link where they inspect the exact document, verify the recipient, see the total, pay and authorize before anything is printed or mailed. A product of Decentralized Publishing LLC, Irvine, California: a mailing and record-keeping service, not a law firm. This file is the index. The full text, with the price comparison, the mail-link format, every tool and how to connect each assistant, is at https://piloxa.com/llms-full.txt ## Price - A one-page letter by USPS Certified Mail costs $12.97 in total, including printing, envelope and postage. A person's first letter is $9.95 all in: one or two pages by Certified Mail with tracking, without the return receipt, one per account. - Adding the Electronic Return Receipt, the record of who signed for the letter, costs $15.97 in total. This is the default service. - Evidence Pack, service code CERTIFIED_EVIDENCE: $24.21 for one page. The return-receipt mailing plus a Certificate of Mailing naming the letter by its SHA-256 fingerprint with every USPS scan, kept 7 years. - Deadline Notice, service code CERTIFIED_DEADLINE: $50.10 for one page. The Evidence Pack plus a same-day First-Class copy and an email if the certified copy is unclaimed, refused or not delivered within 10 days. - The exact total is shown on the review page before any payment. No subscription, no account fee. $6.37 of the price is the Postal Service's own fee. - Piloxa is not the cheapest certified mail service; the comparison is in llms-full.txt and at https://piloxa.com/what-certified-mail-online-really-costs ## How an assistant hands a letter over - Remote MCP endpoint: https://piloxa.com/mcp (no key, no OAuth, no account) - prepare_certified_letter: one call with the letter text, the text of a finished document, or a finished PDF (kept byte for byte); returns a review link. It never mails or charges. - check_certified_letter (read only): page count, what is missing, the recommended service and the exact price. - quote_certified_letter (read only): the exact total for a page count and service. - get_certified_letter_status (read only): what USPS has reported for a letter prepared in the same conversation. - No connector: link the person to https://piloxa.com/send with the letter after the '#' (format in llms-full.txt). - Plain HTTP: https://piloxa.com/openapi.json and https://piloxa.com/agent-capabilities.json - In ChatGPT's plugin directory as "Piloxa — Certified Mail". How to connect each assistant: https://piloxa.com/send-a-certified-letter-online#connect ## Safety boundary - Nothing is printed, mailed or charged until the person approves the exact total, either on the review link or, where authorize_certified_letter is offered, in the conversation with a Stripe shared payment token. - A letter has been sent only at transaction_state VENDOR_ACCEPTED or later. - Live mailing is open to anyone, for letters to any US address. ## Pages - Home: https://piloxa.com/ - For AI assistants and agents: https://piloxa.com/for-ai-agents - Prices: https://piloxa.com/pricing - Send a Certified letter online: https://piloxa.com/send-a-certified-letter-online - Mail a letter an AI wrote: https://piloxa.com/mail-a-letter-your-ai-wrote - For businesses: https://piloxa.com/for-business - What Certified Mail proves: https://piloxa.com/certified-mail-with-proof - Sample mailing record: https://piloxa.com/sample-mailing-record - From ChatGPT, Claude, Gemini, Grok, Meta Muse: https://piloxa.com/chatgpt-certified-mail , https://piloxa.com/claude-certified-mail , https://piloxa.com/gemini-certified-mail , https://piloxa.com/grok-certified-mail , https://piloxa.com/meta-muse-certified-mail - Letters: https://piloxa.com/demand-letter-certified-mail , https://piloxa.com/credit-bureau-dispute-letter-certified-mail , https://piloxa.com/landlord-certified-letter , https://piloxa.com/cease-and-desist-letter-certified-mail , https://piloxa.com/debt-validation-letter-certified-mail , https://piloxa.com/notice-of-intent-to-sue-certified-mail , https://piloxa.com/security-deposit-demand-letter , https://piloxa.com/refund-demand-letter , https://piloxa.com/contractor-demand-letter , https://piloxa.com/insurance-dispute-letter ## Certified Mail guides - USPS Certified Mail, explained: https://piloxa.com/certified-mail - Legal notices by Certified Mail: https://piloxa.com/legal-notice-certified-mail - Proving what was in the envelope: https://piloxa.com/certified-mail-proof-of-contents - Proof of delivery, proof of mailing, records in court: https://piloxa.com/certified-mail-proof-of-delivery , https://piloxa.com/proof-of-mailing , https://piloxa.com/certified-mail-court-evidence - Cost, calculator, delivery time: https://piloxa.com/certified-mail-cost , https://piloxa.com/certified-mail-cost-calculator , https://piloxa.com/certified-mail-delivery-time - Without the Post Office, from a PDF, electronic return receipt: https://piloxa.com/certified-mail-from-home , https://piloxa.com/upload-pdf-certified-mail , https://piloxa.com/certified-mail-electronic-return-receipt - Refused, unclaimed, returned, tracking: https://piloxa.com/certified-mail-refused , https://piloxa.com/certified-mail-unclaimed , https://piloxa.com/certified-mail-returned-to-sender , https://piloxa.com/certified-mail-tracking - For landlords: https://piloxa.com/certified-mail-for-landlords - Every reference, tool and data feed: https://piloxa.com/resources - Privacy, terms, support: https://piloxa.com/privacy , https://piloxa.com/terms , https://piloxa.com/support ## Contact - support@piloxa.com - Last updated: 2026-10-24