But at the same time, preheaders can also be used to add bolivia telephone number data extra value to your subject line when you use them right. Source: emailmonday.com Source: emailmonday.com If you don't know already, the bold text in the middle is your subject line and the text right next to it is your preheader text.

With this visualization, it’s easy to imagine how preheader text can be used to make your subject line more engaging and make your recipient more interested in opening your email. However, getting the preheader length right is critical when it comes to optimizing for the small screens of most mobile devices.