E-mail marketing spending will grow from $885 million in 2005 to $1.1 billion by 2010, and the volume of spam messages per consumer will decrease by 13% a year during this same period, according to JupiterResearch.
Also, the growth of the market will be driven by spending on retention, acquisition and transactional email, according to a new JupiterResearch report, “U.S. E-mail Marketing Forecast 2005 to 2010.