Hi Sumo-ling,

I hope you're doing well. Using the SchedulePress you can unpublish your posts instead of deleting, and your post status will be draft and post will not preview publicly To know more about post unpublish feature you can check this doc out: https://wpdeveloper.com/docs/republish-unpublish-wordpress/

Hope this will help you. Let us know if you have any other queries.

Thanks!