There are several good companies that tap the power of people and internet to get the work done. Here is a comparison list.
1) WeGoLook.com - WeGoLook.com has over 7,000 nationwide lookers (background check verified) who will go anywhere in USA/Canada for an onsite inspection. They provide visual confirmation and a personalized report, completed by a real person, to verify a product, person, property or thing.
2) Zaarly: Zaarly is a proximity based, real-time buyer powered market. Buyers make an offer for an immediate need and sellers cash in on an infinite marketplace for items and services they never knew were for sale.
3) Agent Anything: People can post any service they need accomplished as well as the price they are willing to pay, and college students can perform these services to get paid.
Daniel, great question. Postmates uses professionals couriers, much more like Uber does with limo drivers. Our primary focus are also merchants and business that need to offer and exceptional deliver service to their clients. Our aim is to provide a delivery infrastructure within a city. Merchants can then use this infrastructure much like an Amazon EC2 instance.
You plan to have an SLA? That would be a game changer. In-city delivery API, guaranteed.
Add Lockitron[1] to the mix with secure boxes for pick up and delivery and you got a winner.
Sure. I'm helder, the domain is on my profile description here on HN.
Please define "professional courier". Do you mean local courier companies? I was wondering about insurance coverage (for items shipped and also for people doing the deliveries).