They do this for a purpose to be included mailing list in a business of marketing. 3. The mailing list helps the people to consent for the receipt of emails. This will save you from trouble, essentially because it proves that people themselves are willing to be in your mailing list. 4. Automated process of email list building is always preferable. The most excellent procedure is to activate an auto responder for every email. This will save your energy and most of your time. It is your decision to hire a specialized marketing service for email or use a reliable and mailing list quality software to manage the email list building process. Ultimately, automation speeds up the process. Autoresponders are genuine and assist in the promotion and marketing plan of the products and information available on your site. However, in order to attract clients, you need to offer some incentives, which will enable people to become your subscribers mailing list and build your email list. Auto responders can support in various ways, but do not depend on them entirely. Alternatively, if you are unable to reply to your emails immediately, then an auto responder comes in handy.