Unroll.me head 'heartbroken' that users found out it sells their inbox data

Email service developed a side business after it was acquired by Slice in 2014 – selling aggregated data about users to apps they were unsubscribing from.
Read more: https://www.theguardian.com/technology/2017/apr/24/unrollme-mail-unsubscription-service-heartbroken-sells-user-inbox-data-slice?source=Snapzu