Basically, opt in list refers to the list of email addresses of people who have agreed to subscribe to your mailing list. In this way, you can freely send emails that entail promotions, brochures, new product announcements, and every aspect of your marketing campaign.

When you build an opt in list, you do not only increase the probability of being successful in email marketing but also boost your sales and profits as well. This is because building an opt in list will give you the chance to stay in contact with your customers by getting their email address.

In this manner, you can continue to promote your products and services in which they are interested in because they have opted to subscribe in your mailing list. Hence, whatever it is that you feed them, chances are, they will most likely respond positively.

In reality, building an opt in list is actually letting the people realize the charisma and magic of email marketing. In this way, spams will be avoided, if not eliminated, and will not ruin the positive image of email marketing.

With spamming, email marketing becomes a disgraceful activity in the Internet. But with opt in list, online businesses can continue to boost their businesses through email marketing without having to worry about being accused of spamming.

In building opt in list, there are two types to be considered. The first one is the single opt-in and the other one is the double opt-in or the confirmed opt-in.

In building single opt-in list, online businesses would simply use a 'sign-up tag' in their web sites so that every time a person visits their website, he or she can opt to subscribe in the business email list.

On the other hand, a confirmed opt-in list or double opt-in entails a confirmation message after the customer had subscribed to the particular web sites email list.

Usually, the confirmation takes place by replying on a system-generated message that asks for a confirmation of the subscription or by clicking on a link that entails the confirmation of the customer.

Whatever type of opt in list you would prefer, each has its own pros and cons when it comes to email marketing. But nevertheless, both are designed to give your online business the best solution possible in order to generate emails and permissions without having to get into trouble.

Indeed, email marketing is such a profitable business in the Internet. But it would not be complete and will never succeed without the help of the opt-in lists. These two must always go hand-in-hand in order to be successful in the virtual world of Internet marketing.

John Ugoshowa. For more information about lead generation see the website traffic section of TheFreeAdForum.com directory at: http://www.thefreeadforum.com/infowizards/CAT/Lead-Generation_72_1.html