WP & Woo Duplicate Email Sent

Hi, this plugin is waaayyy much better than the rest SMTP plugins.
This is not a support ticket but just trying to help anyone else having the same issue, which is all notification emails sent from WP or Woocommerce (orders, password reset, etc) were sent twice every time to the recipient.

I’m using the default setup wizard supplied & custom SMTP (rackspace email).
To fix this, you simply have to get into the “All Settings” page and go to the Fallback tab. And make sure “Use Fallback?” is set to NO.

By default it’s not checked. I think its better to have checked as NO by default. Because sometime user just follow the setup wizard without looking into other settings. This is also to prevent emails detected as spam.
Thank you for this great plugin!