This feature allows you get more subscribers and it is a simple way for subscribers to do so. Subscribers only need to send a blank email for registration. They do not need to input their email address to register.
If you are to gather subscribers through mobile site, it is a simple way by adding a link on the site, which will send out a blank email. Visitors will only need to click once to register for subscription.
For an advanced method, we provide HTML source for the registration form. You can embed the HTML source directly on your website to display registration form for subscription for the visitors.