How can I simply and quickly upload just 1 photo from my iPhone to a PC or Mac? This is really frustrating. Occasionally, my work requires me to upload a photo from my iPhone (ios7) to a clients PC or Mac. I used to simply email it to my Gmail account and download it from the web but for whatever reason I can no longer do this (seems I can no longer email something to my self via Mac mail).

I've got Photostream set up but I cant access it via iCloud - theres just no photo option.

Obviously my clients PCs dont always have iPhoto (which is a huge pain to use anyway).

Why isnt there a simple way to transfer a photo from my phone to a computer via Bluetooth or USB?

Is there just a simple, non-proprietry software solution for transferring just 1 photo between devices?
You can email it as an attachment to another email address. For emailing single photos, I got around this problem by setting up a secondary email account and emailing it to myself there. Then I checked the email account from my laptop. For multiple pictures, I had to use a windows machine (Windows 7). I just plugged the iphone into the PC's USB and it worked, reading it as a data drive.

It may also work to save it as an attachment in a draft message. Then synch accounts and look in the drafts folder of your computer.