Hello @AlisonF227 ,
The regular email builder is going to require either hard returns/enters or shift-enters to add additional lines between paragraphs, since it's meant to be a simpler and more accessible editing functionality.
If you're copying text from another source with formatting already applied, I'd definitely recommend pasting without the formatting, or pasting it into a plaint-text program like Notepad first, then copying from there into the email builder. Otherwise incompatible, outside formatting could cause issues with how the builder presents / sends it.
If you want more advanced editing and email building, and you know how to code HTML, I'd advise using the custom code editor.
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