User Notification Routing to Separate Emails

I am build an event registration form and collecting attendee name and email for up to 3 registrations. I would like to notify each attending their registration by email. One person will fill out the form but each attendee receives the email. Here is how I have the Send to configured. Only the first email is receiving the notificaiton however.

What am I doing wrong?

Send To* > Configure Routing
Send to {Attendee 1 Email:72} if email 1 contains @
Send to {Attendee 2 Email:80} if email 2 contains @
Send to {Attendee 3 Email:81} if email 3 contains @

I'm not seeing anything strikingly wrong stand out here, but just to confirm are you using "email" fields on your form and what happens if you change up the order of that, meaning if you moved the first one down to be the last would the same email still get the notification and the other two not?

Also, have you updated to the latest 1.7.4 release that came out yesterday yet?

You could try send to {Attendee 2 Email:80} if email 2 is not ____ (leave the input blank).

Right on!