The PDF is a file. Send that exact file.

When Codex has finished a client letter, a project handoff or a guide, Postedly can take the artifact itself. Keep the file, its checksum and its sending quote together, then make the final decision in the browser.

See the setup guide See example requests

File transfer, quotes and review links tested

Last tested

Codex transferred an actual PDF through MCP, received an unpaid fax quote and opened its private review endpoint. A separate handwritten-card quote and review also passed. Both reused the verified sender email; neither created an order or attempted payment.

Client and environment
Codex native MCP using the existing OAuth connection against Postedly production; earlier CLI registration and service lookup also passed.
Stages completed
An actual one-page, 1,165-byte PDF uploaded with its exact SHA-256. The unpaid $4.99 fax quote returned two final pages including the cover; the downloaded proof matched the quoted document’s SHA-256 and page count. A separate $11.99 handwritten-card quote also passed. Both omitted sender.email, reused the verified account email and returned private reviews with approved: false. No new order was created.
Your remaining steps
Visually inspect the final proof or card samples, exact message, recipient and total. The sender must then explicitly approve the order before continuing to hosted Stripe Checkout.
Still unverified
Visual proof review, sending approval, payment, fulfillment, refresh/disconnect and an OpenAI public listing.

Use Codex with Postedly

  1. Register the remote server

    Add Postedly to the Codex MCP configuration, then start its OAuth login.

    codex mcp add postedly --url https://postedly.com/mcp/send
codex mcp login postedly

  2. Approve the connection

    Verify your sender email and approve the requested scopes in Postedly. Let the client store credentials; keep them out of prompts and source control.

  3. Use the actual artifact

    Check the available tools and service catalog. Read the finished file from the workspace, upload it, and request a quote for the recipient.

Give it a specific request

Deliver a finished project handoff

Use the approved artifact in your workspace without asking someone to download and re-upload it.

Example request
Use Postedly to quote mailing the final PDF in deliverables/client-letter.pdf to this address. Upload the actual file bytes, verify the returned checksum, and stop before checkout.

Transfer your file

Use authenticated multipart HTTP when the runtime has secure access to the existing OAuth credential. Otherwise use the MCP upload tool or its single-use multipart handoff. Compute base64 and SHA-256 from the file in code; do not reconstruct a PDF from its text.

  • For a letter or fax, prepare a valid, unencrypted PDF no larger than 10 MiB (10,485,760 bytes). Review the saved PDF after exporting it from the draft.
  • For mail, have the recipient’s full US postal address and your US sender address ready. For fax, confirm the receiving US fax number and your US billing address. Check the selected service’s page and layout limits before quoting.
  • Review the final proof returned with the quote, including any added cover or postal layout. An upload preview alone does not establish that the final document is ready to send.
Letter requirements Fax requirements

Mail a check

Codex can prepare a paper check drawn on your own verified US checking account. The assistant never sees your account numbers and can’t sign or pay; those steps stay with you.

  1. Set up checks once, yourself

    Open Postedly’s check page in your browser, verify your email and connect your checking account. You’ll verify it with Plaid, confirm you can sign for it, set a bank passkey and save your signature.

    Set up checks

  2. Ask Codex for the check

    Give the payee’s exact name and US mailing address, the amount and an optional memo. Using Postedly’s check tools, Codex reads your ready accounts and drafts the check, which reserves its number and prepares a service-fee quote. Nothing is signed, charged or sent.

  3. Review, sign and pay

    Open the private review link it gives you. Check the full proof, confirm with your passkey, sign and pay the service fee. The check amount is paid from your account only when the payee deposits it.

  4. Follow the order

    Codex can read the order to see when the check is printed and mailed. Postedly can’t see when it clears; your bank shows that.

Example request
Mail a $250 check to Riverside Little League, 400 Park Rd, Dayton, OH 45402, from my checking account. Memo: Spring registration. Send me the link to review and sign it.

If Codex doesn’t show Postedly’s check tools, reconnect Postedly or refresh its tools, or write the check yourself on Postedly.

Your approval comes before the send

Uploading and quoting have no payment side effect. After you decide to proceed, the browser review link shows the final proof and total before hosted Stripe Checkout. Codex tool access is not permission to place an order.

Cancellation and refund policy

Follow the existing order

Keep the returned order ID with the task and check that order after payment. An ambiguous network response calls for a status check, not a duplicate send.

Check an order on Postedly

Send directly on Postedly

You can use the finished document without connecting an assistant. Download the approved PDF, open Postedly, choose an available service and upload the file. Enter the destination and sender details, then review the final proof and full price before payment. You do not need your own printer or envelopes to mail a PDF through Postedly.

Open the sending form Follow a sending guide Check services and pricing

Before you start

  • The client must support Postedly’s OAuth flow and have permission to read the file. Uploads are limited to 10 MiB; client message limits may be smaller. The guide covers remote tools and browser checkout, not native Codex payment.

Official references

Use these platform references alongside the Postedly guide.

Ready to prepare a send?

Use the connected assistant, or finish directly with Postedly.

Read the technical guide