Develop 4 Part Drip Email Drip Campaign to get email lead to register on website

Develop copy for a 4 part email campaign to nurture unresponsive leads. Each email should be ---------- words
Our client is an alternative investment company. Leads come to the site via ad words and download a lead magnet explaining the benefits of a 1031 Exchange.
Many of these leads never register for the site. The goal of this drip campaign is to send a series of emails to engage these people to register to view the live offerings.
All email copies must pass a financial compliance review