Hubspot provides a feature that inlines all of the CSS included within this special style tag. It works great, and utlimately, style tags are stripped out and CSS is inlined.
<style type="text/css"
data-hse-inline-css="true">
.this-is-inlined {}
</style>
Unfortunately, the “most email clients don’t support style tags” warning still triggers in the drag and drop editor when this tag is included in a module.
That warning is unecessary and should be removed. I’ve found that it causes a lot of confusion with other members of my team so it’s tough to just ignore.
Possible solutions:
1. include a place to include the tag in individual email settings
2. hide the warning when the data-attribute is included
3. hide the warning based on user-roles (developers only)