Spam Mimic Lets you Encode Messages in Spam

SpamMimic is a website that can convert the top secret message of your choice into a spam email. You are limited to a fairly short communication - maybe about 70 characters. The server-side application then transforms your note into what looks like a common spam message. Whats interesting about this strategy is that it employs both encryption - and security by obscurity.

Its unlikely that someone snooping your internet connection would recognize the spam and know to decode it.

The site offers no additional security features. If someone does manage to intercept your message - they can readily decode it using the website.

There is of course the additional concern that your message might be intercepted by an email filter and not make it to its destination.

Resource: Spam Mimic Lets you Encode Messages in Spam