ReadMySubjectLine.com

This webpage serves a tool for digital marketers in charge of email campaigns. It provides a pre visualization of the how the design and subject line will look on the end user phone.
There is an input field to write the tentative subject line as well as the pre-header.  And there is a drag and drop feature on phone design on the right that supports JPGs.  
I created this page with html5, CSS and iFrames.  I wanted to provide a faster way to obtain a visualization of the email before it is sent. The tool can be seen at: www.readmysubjectline.com