--- title: "Connect your AI assistant to send mail, faxes, and checks | Postedly" description: "Choose a Postedly setup guide for ChatGPT, Claude, Muse, Codex and more. Compare tested stages, transfer your file, and review a quote or check proof before payment." url: "https://postedly.com/agents" --- # Connect your AI assistant to send letters, faxes, postcards and *checks* Take a finished document, or the details of a check, from a conversation to a sending order. Find the workflow for your assistant, prepare the details, and keep the final say. Find your assistant Example request > “Mail this letter to the school. Show me the final document and total before I pay.” A request starts preparation. It does not authorize a send. ## What happens after “send this” The same five stages, whichever assistant you use. 1. ### Request Say what you want to send and where it needs to go. You + your assistant 2. ### Document, item or check Transfer the finished file, choose an available product or draft a check. Your assistant 3. ### Quote See the exact document, item or check, the recipient, and the total. Postedly 4. ### Approval Review the details, sign a check if there is one, and authorize the payment and send. You 5. ### Status Check the existing order for payment and sending updates. Postedly + your assistant New: paper checks ## Your assistant can now prepare a check, too. Ask it to pay a person or business by check. It picks your ready checking account, fills in the payee, US address, amount and memo, and gives you a private link. You review the full proof, sign with your passkey and pay the service fee. The check amount stays in your account until it’s deposited. [Set up checks](https://postedly.com/checks) [How checks work](https://postedly.com/services/checks) ### Your assistant can - See which accounts are ready, by their last four digits - Draft the check and reserve its number - Hand you the review link and follow the order ### Only you can - Connect and verify a bank account - See the full proof and sign it - Pay the fee and send it Account numbers, passkeys and signatures never pass through the chat. ## Start with your assistant Connection options differ by product, plan, and workspace. Each guide explains the available path and what still needs your attention. - [Muse — Tested through final-proof review — Take a document from Muse to a fax, letter or postcard order. Transfer the actual file, review the exact quote, and approve before payment. — Read the guide](https://postedly.com/agents/muse) - [Claude & Cowork — Tested through quote and review link — Connect Claude or Cowork to Postedly to prepare fax and mail orders from finished files, with a final document preview and price before payment. — Read the guide](https://postedly.com/agents/claude) - [ChatGPT — Connection and service lookup tested — Use a custom ChatGPT app to prepare a Postedly fax, letter or postcard quote. Learn how file transfer, browser approval and payment fit together. — Read the guide](https://postedly.com/agents/chatgpt) - [Instinct — User-reported quote and review link — Connect Instinct to Postedly where MCP is supported, prepare a quote, and open a private review link before payment. Website fallback included. — Read the guide](https://postedly.com/agents/instinct) ## Ask your assistant to use the website For assistants that work through a browser, start with the task and Postedly’s website. These guides explain the steps to try and what has been verified. - [Grok Bot — Documented setup · untested — Ask Grok Bot to prepare a Postedly letter or fax through the website. Transfer the finished PDF, review the exact proof and total, and approve before payment. — Read the guide](https://postedly.com/agents/grok) ## Building a workflow? Find the setup path for coding agents and automation tools, using Postedly’s document, quote, approval, and order APIs. [Read the API guide](https://postedly.com/developers) - [Codex — File transfer, quotes and review links tested — Connect Codex to Postedly with OAuth, transfer an actual workspace PDF, and prepare a fax or mail quote with a separate approval step. — Read the guide](https://postedly.com/agents/codex) - [Claude Code — Documented setup · untested — Add Postedly as a remote MCP server in Claude Code, prepare a quote from a workspace file, and keep payment behind a separate review. — Read the guide](https://postedly.com/agents/claude-code) - [Cursor — Documented setup · untested — Add Postedly as a remote MCP server in Cursor. Transfer a finished PDF and prepare a mailing or fax quote before browser approval and payment. — Read the guide](https://postedly.com/agents/cursor) - [n8n — Documented workflow · untested — Prepare fax and mail quotes in n8n using Postedly’s MCP or HTTP API. Transfer binary documents and keep a human approval step before payment. — Read the guide](https://postedly.com/agents/n8n) - [Google Gemini — Documented API path · untested — Connect a Gemini-powered agent to Postedly through function calling and authenticated APIs, with direct file transfer and a separate payment review. — Read the guide](https://postedly.com/agents/gemini) - [Microsoft Copilot Studio — Documented setup · untested — Add Postedly’s remote MCP tools to a Microsoft Copilot Studio agent. Prepare document uploads and sending quotes with a final review before payment. — Read the guide](https://postedly.com/agents/copilot-studio) ## A connection is the beginning. The assistant must be able to access your file or offer a private upload link. Postedly checks current service availability and prepares a quote tied to the exact document or item, recipient, and price. For a check, the account owner first connects their own checking account on Postedly, and signs each check themselves. You review the final proof and total before payment. Afterward, keep the same order reference to check progress; a timeout is a reason to check, not to send again. [Read the sending guides](https://postedly.com/guides) [Services, prices and requirements](https://postedly.com/capabilities) [Send directly with Postedly](https://postedly.com/send)