There are so many words that spam filters will block. Furthermore, you can also add other words or email address to your own spam filter. The list is way too long to add here on this answer, so I feel it is best if you go to the website and check out the list on your own. Here is a great site that has the spam filter list broken down into categories. This should help you with what you need. https://blog.hubspot.com/blog/tabid/6307/bid/30684/the-ultimate-list-of-email-spam-trigger-words.aspx
Common words that are blocked by spam filters include: Viagra, Free, Cash, Cheap, Refinance, Discount, Mortgage, Increase, Guarantee, Porn, Sex, and Advertising.
Spammers try to block all words by using a series of algorithms and discrimination. Spammers often try to use a long list of words, using just a few at a time, and/or using multiple words that are difficult to remember.
Spammers try to block all words by using a series of algorithms and discrimination. Spammers often try to use a long list of words, using just a few at a time, and/or using multiple words