Thanks @jonayedhosen
WP Mail Logging shows the emails, therefore the web host is not sending them. So I’m looking at WP Mail SMTP. One concern is that if I use an API I’ll be paying for thousands of emails due to spambots registering as subscribers (there’s 60,000+ already in the database).
I’m presuming I can’t turn off the “Anyone can register” option in the WordPress dashboard, because it would break WooCommerce account creation. Any advice on this?
Thanks!