Hello @The_Nomadi!
If you click on your Sent folder on the left within the Promote tab, you can then click the 3 little dots to the far right of your previously-sent email. There's an option there to Duplicate the sent email and build another campaign using that as a template.
It will place the copy in your Drafts folder and you can further edit it from there. Best of luck to you and happy Weeblying!
