PORTLAND, OR -- (MARKET WIRE) -- 01/31/2006 -- Online marketing expert eROI, Inc. today announced the results of their Q4 2005 email study on deliverability. The eROI, Q4 '05 study breaks down by list size, which day is the best day for email campaigns. In general terms the Study indicates a 29 percent drop quarter over quarter in read rates, and a 21 percent drop in click rates in Q4 over Q3 2005. Additionally, the Q4 data shows a similar trend from the third quarter in that the noticeable high point in the week occurs on Friday for both reads and clicks. So, from this quarter eROI reaffirms that sending volume is inversely related to how reads and clicks react.

"With this shift in behavior we saw a 50 percent increase in email volume," said Ryan Buchanan, President and CEO of eROI. "This large of an increase brings email fatigue and drops in read and click rates. While still an effective means for driving traffic to sites, marketers executing email campaigns should take this into consideration when planning for end-of-the-year efforts."

Find out more about eROI's study at http://www.marketwire.com/mw/release_html_b1?release_id=107997.