Irvine-based Sendio, a developer of enterprise, anti-spam appliances, has scored $3.0M in a venture funding round. According to a spokesperson for the firm, the company raised $3.0M. The funding was first disclosed in regulatory filings and numbers released in the PricewaterhouseCoopers/NVCA MoneyTree survey last week. Investors in the firm were not disclosed, however, Sendio has previously raised funding from Kline Hawkes Growth Equity Fund (now Vicente Capital Partners Growth Equity Fund) and Momentum Venture Management. Sendio develops a security appliance which requires sender authentication before accepting email, a technique which requires manual response to an email to make a sender as trusted; the technique tends to eliminate most unsolicited and unwanted spam emails.