Principle of commitment & consistency -- When people commit to something, they're far more likely to purchase from you. That's why getting them to agree to something like a free + shipping offer or by agreeing with something you've said in some way. This is a powerful principle in sales and if you pay attention to some of the best marketers in the world, you'll notice that they work fervently to get your commitment to something, even if it's very small in the beginning.
We’ve all received automated emails (like the one that provided a link to this blog post!), multiple times a day when we forgot to uncheck the box. You’ll need to join the ranks of these knowing marketers by adopting an automated email system to build your list of subscribers and people you wish to market to. These systems are typically very easy to use and set up and allow you to segment your audience lists and more. Get to know yours intimately.
In marketing automation, Ryan Deiss, co-founder of Digital Marketer, often describes the sales funnel as a multi-step, multi-modality process that moves prospective browsers into buyers. It's multi-stepped because lots must occur between the time that a prospect is aware enough to enter your funnel, to the time when they take action and successfully complete a purchase.