Social Media Management tool HootSuite today face technical issue and expose email address’s of thousands of users. Due of error lots of people receive email reminders with warning that their free 60-day Pro trial was about to end, but also included the names and email addresses of other people using the service. Many of the users who are getting the email spam were not even signed up for the Pro trial. Thenextweb said the mass of emails could be down to a failed import of user accounts.
Source: https://thehackernews.com/2012/11/hootsuite-technical-issue-exposed.html