We’ve added an easy way to upgrade your website from the standard WordPress email system to a professional transactional email service.
This will increase your email deliverability when your website sends emails.
Look in the LifterLMS Engagements Settings Area. You can then connect to SendWP. This is the “easy button” for better website email.
Here is the documentation on how to turn on SendWP: https://lifterlms.com/docs/using-sendwp-for-email-delivery/