Email: divider

A horizontal rule in the theme's border colour.

The divider is part of createContentFeatures. It is drawn in theme.color.border, so the email appearance shows the rule the sent email has in the host's palette.

Above the rule.
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Type --- on an empty line for another.

Settings

Select a block to see its settings.

Typing

--- on an empty line, or Divider in the slash menu, adds one.
It is a void element: the arrow keys select it and Backspace deletes it.

The stored node

{ "type": "hr", "children": [{ "text": "" }] }

The email block editor's divider block maps to it.