Not everyone is going to take action on your email first time round. Subject lines which appeal to some, may not appeal to others. Similarly, the content of the email which appeals to some may not appeal to others.
With re-marketing, you can choose to contact those who have not opened or not clicked, using slightly different messages.
This can give your campaigns an instant boost, usually up to 30-40%.
The best part is, those who have already opened or clicked, will not receive the remarketing email. This helps avoid tiring
out your list with too many messages.