We have a site with woocommerce which allows opt-in to subscribe to blog posts (an email is sent when a new blog post is published). We also allow subscription to the blog post email newsletter directly from a widget.
However we also sometimes want to email all WC customers about our store, even if they are not subscribed to the blog post newsletter. For example a sale is on and we want all blog followers and all customers to receive an email.
I can install a WC premium extension to manually send emails to customers. Problem is that if we also want to use the Newsletter Plugin to send the information to blog followers, many people will receive two emails.
Is it possible to "join" the two groups in the Newsletter Plugin for the purpose of sending one email?