You can see the secret image which is embbedded using a our app "InvisiLetter". If you receive a image embedded the secret image, download this app and see the secret image / messages. Before you buy InvisiLetter, try this app "InvisiReader".
Extracting Steps are:
Step1. In Mail app, hold (touch long) the received image that is embedded secret image and copy this image onto the clipboard.
Step2. Start InvisiLetter and extract it. Keep Shaking or holding up your iPhone in the sun. After 3 seconds...
Ad shows in the secret image view.
In our support page, we will show you how to use this application, and samples of embedded or extracted image, and we launched InvisiLetter API which can embed secret images.