Penny stock spam used to be much more common than it is today, but stock spam messages do still appear from time to time. (Read more about how penny stock schemes work.) This example, circulating around the Internet right now, pumps up a stock called Blue Water Petroleum (BWPC):
Subject: New Update on
Date: Sun, 19 Jul 2015
Get ready for my recent play that can soar 305%! This is the ultimate play for Blue Water Petroleum (BWPC) because these short trades now have to be closed! Recent headlines: Blue Water amplifies its microwave implementation!!! Buy Analysis screams B_W_P C is undervalued, this can have a huge spike on Monday!!! Continue adding Monday!
The spammers try to hook people into buying the stock so it will rise just a small amount, and then they dump their own holdings and leave their victims in the lurch as the price drops back close to zero. These schemes have nothing to do with business, and everything to do with market manipulation.