The approach in this paper looks much cooler. A major thing missing in OP's website is that there is no way to add cover text (equivalent to "key" for encryptio

The approach in this paper looks much cooler. A major thing missing in OP's website is that there is no way to add cover text (equivalent to "key" for encryption). However I like the fact that message comes out as spam so it (hopefully) stays out of inbox of receiving person and one would need to know what to look for in spam folder. This is very cool because I'd never thought of utility of making a message purposely look like spam.