You cannot use Sales Navigator and easily bring that info to Zaplify to obtain emails due to 2 reasons:
Zaplify does not enrich the data that you upload
LinkedIn does not offer the option to export account and lead information from Sales Navigator into a CSV or XLS file. Read more about it here
However, there exists a workaround. Despite our aspiration to be an all-encompassing company, there are alternative solutions available that complement Zaplify exceptionally well. One such solution is Phantombuster. They specialize in extracting required information from pages such as LinkedIn and enhancing prospects by providing their email addresses.
Subsequently, you can import the list created through Phantombuster into Zaplify to initiate your outreach.
Read more about the pricing at Phantombuster.