During its first four years, Berlin-based Posteo e.K. struggled to find customers for its secure e-mail service. That changed in June, when U.S. National Security Agency contractor Edward Snowden revealed that his former employer monitored phones and e-mails worldwide. In the past six months, Posteo has tripled the subscribers of its 1-euro-per-month ($1.37) encryption service, to more than 30,000.
“The NSA reports were the final straw,” said Daniel Hundmaier, a 42-year-old communications officer in Berlin who switched to Posteo, stopped using Google Inc.’s search engine, and changed the operating system on his phone.