You also risk having your e-mail accounts and website terminated when the complaints reach the relevant authorities. I do collect a lot of spam messages for research purposes. There was a case where two of the spam messages that I received were from the same person who owns two different websites. I visited his websites and discovered a message in both the sites that said that the authorities had closed them due to unethical behavior in spamming activities. The best answer to that question would be the use of E-mail Marketing through an electronic newsletter that people request a subscription to.
Most surfers check their e-mail messages first.
You can tell them where to go first, before they visit other sites. You bring awareness to your business, products, and services. The best part is that the recipients have asked to receive your electronic publication and have an opportunity to read your messages at their leisure. Most people are usually busy. If they happen to be interrupted while reading their messages, they can always log off and return later to continue where they left off.