Perion is an Israel-based software company providing engagement and monetization solutions for web and mobile based digital businesses. Their headquarters are in Holon, Israel, with offices in San Francisco, CA; New York City, NY; Redmond, WA, USA; Paris, France and Barcelona, Spain. Perion was formerly IncrediMail, an email company founded in 1999 by cousins Yaron and Ofer Adler. Soon after its founding, they raised $3.3 million from private and institutional sources and IPOed on NASDAQ in January 2006. They listed on the Tel Aviv Stock Exchange in 2007. Perion was managed by its original founders until August 2010, when Josef Mandelbaum was appointed CEO. Mandelbaum had previously been CEO of American Greetings Interactive, the internet branch of American Greetings.