On: Gmail blows up e-mail marketing by caching all ima...

[pramodliv1]

What if the images are slightly modified for each user? A mixture of image processing and hashing can be used for deduping though.

[vidarh → pramodliv1]

E-mail marketing companies would make a fortune coming up with "image composition plugins" for their systems. E.g. manipulating background patterns; alter the positioning of image elements; change text positioning, size, fonts; change objects in the images.

It'd be a gold mine.

[jtheory → vidarh]

I'm pretty sure this already exists -- I've gotten spam with obviously random noise, lines, etc. added to the background.

My assumption is that it's making the images unique.