Adding an email navigation bar is a good way to encourage more clicks from your email campaigns.
Obviously you will want to make sure that all your emails have compelling content for your target audience. However, there may be occasions when the main email content isn’t of interest to everyone. By including a mini navigation bar in the preview pane area, you are providing extra options which may have greater appeal for the recipient.
Due to limited space the navigation bar may have to be a slimmed-down version featuring the top performing links from your website or especially relevant to the email content.