You can Search / Find Email Subscribers/contacts globally in all the lists, within the list.
1. Search in all lists: Click on the “View All List” option from the left menu of the MailPion dashboard and then click on the “All Subscriber” button at the top right of the screen, then, on the next screen, use the blank box to search the email contact.
2. Search within the list: Click on the list–> Click on subscriber glance and use the blank box to search the email contact.