Meta Muse

Muse wrote the letter. Piloxa mails it and keeps the proof.

Muse, the personal agent Meta launched in September 2026, can reach Piloxa two ways today: by building itself a custom connector from Piloxa’s public API, which needs no key and no account, or by opening piloxa.com in its own browser. Either way the result is the same review link, and nothing is printed or charged until you open it and approve.

The quickest way: say this to Muse

“Create a custom connector for Piloxa from https://piloxa.com/openapi.json. It needs no key. Then prepare this letter for USPS Certified Mail with electronic return receipt and give me the review link.”

Meta’s help center says that when a service is not in Muse’s connector list, you can ask Muse to create a custom connector for it, as long as the service has its own API. Piloxa does: https://piloxa.com/openapi.json describes three calls, and none of them needs a key, an account or a payment card. Muse asks you before it connects; Meta shows a warning that it does not review custom connectors, which is true of every custom connector, not just this one.

Muse sends the letter to Piloxa in one call and gets back a link. You open it, read the exact pages as they will print, check the recipient after the postal address check, see one total, and authorize with your card. The letter leaves only at that moment.

Or let Muse use the website

Muse browses with its own browser, so you can also say: “Open piloxa.com/app, paste this letter, fill in who it is from and who it goes to, choose Certified Mail with electronic return receipt, and stop when it asks me to pay.” The page shows the laid-out letter and the exact total with no account. Paying needs you, which is the point: nothing is charged until you approve the letter yourself.

What Muse cannot do with Piloxa

• It cannot mail anything by itself. Every call prepares a draft and returns a review link. That is its only ability.
• It cannot charge your card. Payment happens on the review page, by you.
• It cannot see your Piloxa account or any letter it did not prepare in that conversation.
• Piloxa cannot read your conversation with Muse. Nothing reaches us except the letter and addresses handed over.

Status, 26 September 2026: Piloxa is not yet in Muse’s built-in connector list, and this route has not been tested end to end from Muse. It uses the same calls that Claude, ChatGPT and Grok use every day. If something goes wrong, the paste page at piloxa.com/app is the same price and the same record.

What you end up holding

• The exact letter that was approved, kept unchanged, with the fingerprint that shows it is the same file.
• The recipient address as it was printed, after the postal check.
• The mailing record: the service that was bought, when the letter was handed over to be printed and mailed, and the reference the printer gave it.
• The sentence you authorized, and the time you authorized it.

You are buying USPS Certified Mail, so the Postal Service keeps its own delivery record. Piloxa asks the printing partner for that history on its own, without anyone pressing anything, and adds each scan to your record as it is reported, naming where it came from. If you chose the return receipt, the signature of whoever accepted the letter is recorded the same way once USPS releases it. Where nothing has come back, the record says “no record yet” rather than guessing. The sample record shows every state, including the incomplete ones.

Certified Mail proves that something was delivered. It does not prove what was inside. Keeping the approved letter beside the mailing record is what closes that gap, and it is the whole reason this exists. See a filled-in record.

Common questions

Can Meta Muse send certified mail?

Not by itself. Muse has no postal service of its own. With Piloxa it can prepare a USPS Certified letter in one call and hand you a review link; a person opens the link, reads the document and pays before anything is printed or mailed.

Is Piloxa in Muse’s connector list?

Not yet, as of 26 September 2026. Muse can still use Piloxa today through a custom connector built from piloxa.com/openapi.json, or by opening piloxa.com in its browser.

Does the connector need a key or an account?

No. Piloxa’s API asks for no key, no OAuth and no account. An account is created only when you pay for a letter.

What does it cost?

$12.97 all in for a one-page letter by USPS Certified Mail, or $15.97 all in with the electronic return receipt. Printing, envelope and postage are included. There is no subscription and no minimum.

Where does Piloxa mail to?

Any US address. Muse is available in the United States, and so is Piloxa.

What proof do I get that it was mailed?

The exact document with its fingerprint, the printed recipient address, the service that was bought, and the mailing record showing when it was handed over to be printed and mailed. USPS tracking scans and, with the electronic return receipt, the signature are added to the record as the Postal Service reports them.

Primary sources

• Meta: Introducing Muse (8 September 2026)
• Meta Help Center: How Muse works with Connectors
• USPS Postal Explorer: what Certified Mail documents

Muse references read 26 September 2026. Muse is still rolling out and its connector options vary by account.

Sending from somewhere else

• From ChatGPT
• From Claude
• From Gemini
• From Grok
• From any assistant
• How the connector works