How it works
- First click on "Campaigns" in the left sidebar menu
- Then click on the "Market Email" draft campaign from the list
- Next click on the "Edit design" button in the campaign editor
- Next click on the "More actions" button on the top-right corner
- Then select on the "Developer Mode" in the pop-up window panel
- Finally click on the "Open developer mode" button to change the editor view
