Australian email marketing platform Campaign Monitor has raised US$250 million in funding from American VC firm Insight Venture Partners. The funds will be used for expansion to the US and Europe as well as for acquisitions. Owners Dave Greiner and Ben Richardson have bootstrapped the business to date. Campaign Monitor has 100,000 paying customers in 19 countries. The equity stake in exchange for the investment is not disclosed, but it is estimated that the latest funding pegs Campaign Monitor’s value at US$600 million. This is an exciting time for the Australian ecosystem and represents the largest amount ever raised for an Australian startup. They’ve done it their way with an office on the beach in Sutherland with 40 local staff.