Tip 3. Everytime you sell something capture your customer's email address
Your customers will already be entering their details on your payment pages and as such you should be adding their email addresses to your list. Provide a free demo for your service and product, asking for the e-mail address of your prospect. Try to automate the whole process, checking the email adresses with a double opt-in system.
Once you have the email address of your prospect send him a confirmation email and lead him automatically to your product presentation or follow up page.
Tip 4. Have a “Members Only” area on your site. Continues on the next page.