Opt-in mailing lists are considered solid online marketing tool that every business must have to make a sale. With more and more online businesses competing for customer's email address and other contact information, how can you possibly get ahead of them and build your own list the fastest and most efficient way? Studies show that few online users would volunteer to join any mailing list. The trick is to offer them something they will not be able to resist in exchange of their email addresses. Give your online visitors a good reason mailing list to join your mailing list. Here are the tried and tested methods in building your own mailing lists the faster way: 1. Keep in mind that your goal is to convince each of your online visitor to subscribe to your opt-in mailing list. 2. Build your "discount club". Post promotions on your web site offering discounts exclusively to the members of your mailing list. 3. Throw in freebies. Give incentives to those who would be signing up to your mailing list in a short duration of time. This will create a sense of urgency and online users will respond immediately. 4. Use other marketing strategies. Advertise your opt-in list and its benefits using autoresponders, article marketing, etc. 5. Put the invitation to join the mailing list on your web site.