Send physical mail from the tools you already use.

PostBridge integrates with ChatGPT, Clio Manage, and any agent framework that can call a REST endpoint. Pick the surface that fits your workflow.

ChatGPT

Live

The PostBridge Custom GPT on ChatGPT. Type a recipient and a letter; the GPT walks you through quote, upload, payment, and dispatch. Available worldwide, supports US, UK, France, Germany, and Canada.

  • 5-country letter coverage at launch
  • Quote-before-send confirmation
  • Stripe Checkout for payment
  • Verifiable proof of delivery (PostalProof VC)
Open the Custom GPT Learn more

Clio Manage

Coming soon

Send Royal Mail letters straight from any Clio matter. One-click Custom Action button, pre-filled recipient and document, Matter Note writeback with the tracking number. Currently in App Directory submission — estimated launch this summer.

  • UK launch — Royal Mail 1st / 2nd / Signed For / Special Delivery
  • Pay per letter via Stripe (no subscription)
  • Audit trail back on the originating matter
  • OAuth 2.0 install, encrypted credentials at rest
Preview the experience Get notified at launch →

Building an integration?

Every integration above sits on the same REST API any team can use directly. If you want PostBridge inside your workflow surface — case-management tool, CRM, agent framework, internal portal — email agent@postbridge.ai and we'll co-build it.