You could set up the email step as a repeating action. It'll mean the relevant editor gets multiple emails, but it'll run the step just once for each record.
Another option would be to run the automation starting from the email. Searching for empty fields that ALSO have the editor's email. This one is only dependant on how the rest of your base and steps are set up.
Justin Ng
Programme Coordinator at Sistema Aotearoa
https://www.sistemaaotearoa.org.nz/