We are experiencing a formatting issue when copying and pasting email content into Invision Community. Specifically, when we paste our pre-designed email templates, numerous unexpected borders and layout containers appear, distorting the original formatting (please see the attached screenshots for reference).

This makes the email difficult to edit and visually inconsistent with our intended design.

Are there any best practices or recommended methods for pasting formatted content into the platform without triggering excessive border elements?

Are you pasting a whole HTML email into the editor for Bulk Mail? If so, you may receive unintended results from doing so as that isn't really intended. The editor will likely strip and reformat items as they are not supported so results may be inconsistent to what you see in HTML. I would advise removing the HTML and simply pasting your content into the email.