Custom Branding not working correctly

How do I get my user email notifications to reach my end users from my own brand instead of wordpress branding and wordpress email address? I thought ultimate branding did this.

In this screen shot you can see that emails are being sent to end users as "wordpress", and not only from "wordpress" but the actual email address is different. You can see "shawn@austinfitnessoptions.com" and you can see "wordpress@austinfitnessoptions.com"

If you look closely at the type of email, it's for both types of emails:
-The reminder emails after someone RSVP's for an Event (I'm using Events+ plugin and Membership)
-and the emails I set up through membership plugin by going to my dashboard and selecting Membership-->Communications-->

ALSO, inside the email, it shows a "via hostgator" address, like this:
wordpress@austinfitnessoptions.com via gator80.hostgator.com