The best alternatives to CloudPrint are NanaGram, ScanPost, and SendOvernightMail. If these 3 options don't work for you, we've listed a few more alternatives below.
SendOverNight Mail is the easiest way to print and mail time sensitive documents, right from your browser. Easily upload your documents, select a recipient, and select how fast you want your mail delivered! SendOvernight Mail uses Fedex, USPS Priority, or USPS Priority Express. All mail comes with delivery notifications and tracking numbers.
Printsnap is a plugin for Snapchat that lets you instantly get your photos mailed to you or a friend — like a Polaroid in your pocket! Just send the Snap to 'My Printsnap Story'. Prints are just a dollar each and ship everywhere in the US.