As people have said, there is always a way from someone to intercept a message. An organization can, at the ISP level, intercept all images that you access in your browser and then perform OCR on the images you receive to extract the message. So there is no foolproof solution here. However, this is simply a service that allows you to send "read only once" emails, with no SMTP records of the message on any servers. It has a certain level of protection that I feel some people will find useful, in the same way that some people really value off-the-record gchat.
Well, the image containing the message is only ever served once. If the recipient navigates away from the email and then opens the email again, the image containing the message will be replaced with a different image (the message will be gone). I recommend reading the full FAQ and trying it out.
Comments
This is obvious security snake oil. The FAQ makers it clear it does nothing to thwart PRISM etc.
As people have said, there is always a way from someone to intercept a message. An organization can, at the ISP level, intercept all images that you access in your browser and then perform OCR on the images you receive to extract the message. So there is no foolproof solution here. However, this is simply a service that allows you to send "read only once" emails, with no SMTP records of the message on any servers. It has a certain level of protection that I feel some people will find useful, in the same way that some people really value off-the-record gchat.
I saw nothing to convince me this is a true statement:
'allows you to send "read only once" emails'
Well, the image containing the message is only ever served once. If the recipient navigates away from the email and then opens the email again, the image containing the message will be replaced with a different image (the message will be gone). I recommend reading the full FAQ and trying it out.