You're right, WP does have several plugins that do this, the most popular being from providers like ConstantContact and Mailchimp. I think I'd expect a few WP u

You're right, WP does have several plugins that do this, the most popular being from providers like ConstantContact and Mailchimp. I think I'd expect a few WP users but you're right, my target are probably people that are using something like Jekyll.