Managing contacts with multiple email addresses

Posting from GH:

Your software
My Mautic version is: 2.15.3
My PHP version is: 7.0.18

Your problem
Hey guys, good morning!
I apologize for my before-hand English!

I wanted to check the following…

I happen to have some contacts who have more than one email. Mautic has the possibility to generate custom fields to add new data with their respective data type.

The question is How do I choose whether to send emails to Mail 1 or Mail 2?
Is it possible? Did someone do it or do you know how to do it?