The number of mobile enterprise email subscribers will increase in Asia/Pacific (excluding Japan) region from 0.74 mln in 2006 to 2.72 mln in 2010 at a compound annual growth rate (CAGR) of 38.2%. Significant growth will come when mobile email proliferates within the ranks of the middle management and the frontline staff and offer cost efficiencies for the enterprise, according to IDC.