Yikes that is not a good experience – apologies for that. WooCommerce Admin is built on top of ActionScheduler which is in WooCommerce Core. ActionScheduler is a job queue system that allows us to enqueue jobs to update the reporting tables. The data for ActionScheduler is a custom post type, so when a new job is created, a post is created.
It appears you have something that is sending emails when new posts are published on the site. Do you happen to know which plugin you are using for that?
I have opened up a bug report on our repository to track this:
https://github.com/woocommerce/woocommerce-admin/issues/2092
Not certain if we can fix on our end, but please let me know which plugin you are using to send the email alerts and I can look into it.