The idea is much older, but was popularized 22 years ago by Bill Gates: https://www.cbsnews.com/news/fee-based-e-mail-way-to-can-spam/ https://www.cbsnews.com/n

The idea is much older, but was popularized 22 years ago by Bill Gates: https://www.cbsnews.com/news/fee-based-e-mail-way-to-can-spam/ https://www.cbsnews.com/news/fee-based-e-mail-way-to-can-spa...