For a while now, Kindle users have been able to email personal documents directly to their devices. Now, Amazon has extended that support to anyone with the latest version of the Kindle iOS app. Upon updating, we were able to get everything from photos to game manuals on an iPhone 4S. Sending a document takes a little setup, but it's easy to do and supports a range of file types.
Before doing anything else, you'll want to make sure that the Kindle or app you're using is registered with your Amazon account. If you've signed in with your Amazon account, it should be. Once that's covered, it's just a matter of going through the following steps:
1. Register your email address
Only email addresses that you pre-approve can send documents to...