This month, we released a new version of the email editor that creates template you can use in email campaigns. The new email editor allows you to paste in HTML content as blocks in the overall layout.

Important to note: content created in the editor (text, images, etc.) can be directly edited using the UI, while content created as an HTML snippet must be edited as HTML and not through the UI

For more information on the new email editor, here is a knowledgebase article: https://help.accredible.com/s/article/V2-Email-Template-Editor?language=en_US