Show HN: Postmaster - an easy API for shipping on the web

Hi all, I’m really excited to start talking about Postmaster. We are a small startup in Austin that is focused on shipping integration. With Postmaster you can be shipping packages in less than 5 minutes (from signup to your first curl against the RESTful API). You can ship/track/validate-addresses through multiple vendors, get callbacks on your shipment events, and we are working on much more. We are letting people into the beta slowly to make sure we keep response times and service levels high. Let us know if you have any shipping feature requests.

Also, yes, we know about these:

  * easypost.co  
  * rocketship.it  
  * postalmethods.com  
  * click2mail.com  
  * sincerely.com  
  * scrubmyaddress.com

Q1: Will this allow for tracking and management of shipments not created through Postmaster?

Q2: Will this allow for monitoring of preprinted shipping labels (e.g. RMA labels or https://store.burrellimaging.com/index.php/supplies/mailers-...), with web hooks when they are used for a shipment?

Q3: When creating a shipment, will it be possible to specify rules for the "service"? E.g. "cheapest service with delivery by X date, but no more than Y dollars."

Q4: Can carrier specific account numbers be provided for lower shipping rates (and so shipments will be tied to account for claims, etc.)?

Can't wait to get into the Beta. Another great technology coming out of Austin.