Emails sent out with content to all subscribers

We recently installed the Wordpress plugin and are currently syncing our post history from Patreon. We just tested publishing an old patreon post to our Wordpress site and discovered that in doing this it was sent out to all our email subscribers, including the content.
For this plugin to work, we would need to be able to deactivate the sending out of emails with each post publish. Otherwise, it’s not clear to us how to keep the Patreon content hidden. Any idea on how to do this?

Thanks for your help.