Opt-in email advertising or permission marketing is a method of advertising by electronic mail wherein the recipient of the advertisement has consented to receive it. It is one of several ways developed by marketers to eliminate the disadvantages of email marketing.

Email has become a very popular mode of communication across the world. It has also become extremely popular to advertise through. Some of the many advantages of advertising through email are the direct contact with the consumer and is “inexpensive, flexible, and simple to implement” (Fairhead, 2003). There are also disadvantages attached to email advertising such as, alienating the consumer because of overload to messages or the advertisement getting deleted without getting read.

Permission email marketing may evolve into a technology that uses a handshake protocol between sender and receiver (Fairhaed, 2003). This system is intended to eventually result in a high degree of satisfaction between consumers and marketers. If opt-in email advertising is used, the material that is emailed to consumers will be “anticipated.” It is assumed that the consumer wants to receive it, which makes it unlike unsolicited advertisements sent to the consumer (often referred to as spam). Ideally, opt-in email advertisements will be more personal and relevant to the consumer than untargetted advertisements.

A common example of permission marketing is a newsletter sent to a firm’s customers. 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.