The HTML editor is reserved for users with HTML and CSS experience, and may be used in two ways:
Copying and pasting the HTML code from a custom template made by your agency or your web developer
Using the WYSIWYG interface to quickly write a very simple message.
The HTML editor has a simplified WYSIWYG ('What You See Is What You Get') interface that allows you to easily edit certain items such as text, picture links, font and font color.
We do not recommend using the WYSIWIG editor for complex layouts because the HTML/CSS code that is generated is not responsive design, so your email may not be displayed correctly on mobile or tablet screens.