Since its inception, the IronPort Threat Operations Center has been tracking worldwide spam volume. Changes in spam volume can be attributed to numerous factors including the variety of methods used by spammers and capture rates due to the ability (or inability) of anti-spam solutions to keep up with rapidly changing techniques.

The graph below expresses the number of spam messages over a specified amount of time. The table contains additional vectors to help show how spam relates to global email volume and its own average statistics.

Global spam volume

Date Spam Volume (Billions) % of Global Email Volume Spam Volume Change 2010 Sep 01 309.4 85.4% 0% 2010 Aug 31 307.5 85.5% -1% 2010 Aug 30 313.0 85.6% 22% 2010 Aug 29 255.5 85.6% -4% 2010 Aug 28 267.3 85.7% -15% 2010 Aug 27 314.6 85.6% -6% 2010 Aug 26 336.3 85.6% -3% 2010 Aug 25 350.0 85.7% 1% 2010 Aug 24 345.6 85.9% 0% 2010 Aug 23 347.2 86.2% 22% 2010 Aug 22 282.7 85.8% 4% 2010 Aug 21 269.7 85.7% -19% 2010 Aug 20 334.3 85.7% -9% 2010 Aug 19 368.9 85.8% 2% 2010 Aug 18 360.2 85.8% 3% 2010 Aug 17 349.3 86.9% 6% 2010 Aug 16 329.2 85.7% 21% 2010 Aug 15 270.5 85.5% -4% 2010 Aug 14 282.8 85.6% -9% 2010 Aug 13 312.4 85.7% -9% 2010 Aug 12 345.9 85.6% 0% 2010 Aug 11 346.7 85.6% -4% 2010 Aug 10 362.0 85.8% 4% 2010 Aug 09 346.7 85.8% 13% 2010 Aug 08 305.8 85.7% -1% 2010 Aug 07 309.6 85.7% -8% 2010 Aug 06 340.0 85.6% -3% 2010 Aug 05 350.7 85.6% 0% 2010 Aug 04 350.3 85.7% -4% 2010 Aug 03 367.8 85.7% 1% 2010 Aug 02 362.6 86.5% 14%