Setting up iMessage with multiple email accounts

So I have two Apple IDs - one for Canada and one for the US - in part because there is no way to change from one country to the other ...

I tried to add the second email to my iMessage form my Mac and from my Phone. It says it is sending an email to confirm, but I never get the email. I tried resending, I tried looking through my spam ... it isn't sending the email to the second address ...

Any thoughts on how I can setup iMessage to monitor both of my email addresses?

Thanks

Rebecca