This email list is maintained and run by Tuomas Rounakari himself. He posts rarely, sometimes not even once a year, so this is one of the safest lists to be. Your email address is only used to send you the newsletter. Unsubscribe anytime using the link included in every email.
Tuomas encourages interaction and the newsletter is often a call for discussions for the community. The newsletter gives you first hand info on his most important news, projects and life-changes. Smaller announcements (gigs and workshops) are often only in social media and homepage.