Inlining is the process of prepping an HTML email for delivery to email clients.
Inlining is the process of prepping an HTML email for delivery to email clients. Some email clients strip out your email's styles unless they are written inline with style tags. Here's what the inliner does
All of your CSS is embedded directly into the HTML as style attributes on each tag.
media query CSS
inside a @media block can't be inlined, so it's put in a
Compresses the output
The final HTML is compressed by removing whitespace between tags and CSS blocks.