First off, I would like to say that I am not a spammer and my question is a philosophical one so it should be easy to answer. I work for a financial company that emails customers weekly market commentary that is about 3-6 pages long. We ran into problems with spam filters because there were some words (like debt, investment.) that the financial guys could not live without. I made a program that flags potential spam words, and then we have to beg them to try to find Synonyms that won't get flaged.
I had this great idea to modify the program so when it finds a potential spam word it will replace it with an image of the word that looked exactly the same. I found a great tutorial about generating images on-the-fly using PHP.
My question is will this help email deliverability. And is it worth the effort? Also, if anyone has created text images using PHP and would like to add some tips, that would be helpful.