Opt in email marketing is the art of building a relationship with individuals who are either on your list or will be, providing them quality content and supplying them with solutions to their problems.

Web Site visitors, customers, and other associates want to hear more from your business in the form of e-mail. Interested persons can "opt-in" (or "subscribe"), to the newsletter or promotional offerings from your company. Opt-in e-mail marketing is permission based, so only those who ask to receive the e-mail will get them.  It is one of best way to reach targeted potential customers.

A common example of permission marketing is a newsletters. Newsletters like this are a way to let customers know about upcoming events or promotions, or new products. In this type of advertising, a company that wants to send a newsletter to their customers may ask them at the point of purchase if they would like to receive this newsletter.

With a foundation of opted-in contact information stored in a database, marketers can automatically send out promotional materials. The marketers can also segment their promotions to specific market segments.