It should be fairly apparent that your approach to email marketing should only involve sending e-mails to individuals who have signed up to receive them. This might be done as a sign up on your website to receive your newsletter, an autoresponder series, or some other type of information. Avoid any temptation to send unsolicited emails under any circumstances. I know I probably don’t have to say that, but just in case.
The process of getting people to sign up to receive your emails can be accomplished in different ways. The simplest way is known as “opt in” or “single opt in.” This is where you add the e-mail address to your list after someone enters their address on your sign-up form. You may decide to send a “welcome” or “thank you” e-mail to that person as soon as they sign up. This e-mail will likely contain instructions and a link for unsubscribing, and the subscriber will begin receiving your e-mails without having to take any additional action.