Provide a little gift for signing up

People won’t give you their email address for no reason. You need to entice them a little. A very good way to do this is simply by offering them a concrete, clear item in exchange for their email address. Ebooks or free templates are some examples of items that have proven to be very effective. 

Just think about it; typing in your email address in exchange for a free, helpful gift. I’m sure you’ve done it yourself at some point. Simply email them a download link after signing up to back up the email requirement, and voila! Another lead in the pocket!