Definitely, you can edit the emails that are already published.
- Choose the published email that needs to be edited
- Expand the Action tab
- Click on Visual edit
- Modify the Email contents or images
- Click on ” Save and Close” option
After you do the modification to published email , in order to see the modified contents, you need to republish the email
- Expand the Action tab
- Click on “Republish page” option
- Now all the new changes will be available on your email
