An email conversion can be described as when subscribers take a specific action after receiving and opening an email you sent them. The number of recipients who perform the desired action to the total number of emails sent gives the rate of conversion.

To convert leads into sales, you need that last hook, an offer too good to resist.
1. Identify a clear benefit.
2. Offer a clear command or directive.
3. Give the reader proof of how others have benefited.