Apologies, this is such a major irritant I cannot believe it hasn't been discussed before, but I can't find any previous threads.
In the Marketo email editor, I can create a single line break to start text on a new line. But any further line breaks intended to leave a SPACE between one paragraph and another remain undetected. They appear in the WYSIWIG editor but as soon as I leave it, they have gone (and do not appear in sent emails).
Can anyone help?