To see lists of subscribers for crowdfunding, fundraising and mobile marketing campaigns click Message Center > Lists.
View subscribers By List or By Individual.
Clicking on each list shows a breakdown of which numbers are verified and how many numbers have unsubscribed.
After clicking on an active list you can import and export records in CSV format as well as view totals of verified mobile numbers and unsubscribers. Additionally you can manually unsubscribe mobile numbers.