Actually there are two files one can use. One is "IMaccept" where any trigger can be used. In this case the one sending e-mails must know which triggers the receiver has implemented. The second file is "Email slave". With this one the sender has to put the trigger as subject and orders the receiver ...

Some subliminal files are already posted on the site. If the subliminal message is hidden behind the sound of rain or similar, it doesn't make it much different from a subliminal message hidden behind a song. I could tell someone that listening to the sound of rain is soothing or such if I'd wanted ...