Join me today in planting a tree to offset the impact of spam on the environment.
The energy consumed in transmitting and deleting spam is equivalent to
the electricity used in 2.4 million U.S. homes, with greenhouse gas
(GHG) emissions equivalent to 3.1 million passenger cars, according to a new report from climate-change consultant ICF International (and commissioned by McAfee) entitled The Carbon Footprint of Email Spam Report,
Yes, I laughed the first time I heard this. Yes, I thought it was some cheap stunt to capitalize on Earth Day -- although the report was announced before today. I did not realize that email was a serious carbon polluter.
How is this possible? It is not that an individual message causes a lot of pollution. The carbon footprint of a spam message is a mere 0.3 grams of CO2-equivalent (CO2-e) -- the equivalent of driving three feet. This is far less than the four grams of CO2 ICF associates with the average legitimate email. How did they even get that much? This is what ICF International included: Harvesting addresses, Creating spam campaigns, Sending spam from zombies and mail servers, Transmitting spam from sender to receiver via the Internet, Processing of spam by incoming mail servers, Storing messages, Viewing and deleting spam, and Filtering spam and searching for false positives.
"The overwhelming majority of spam’s GHG emissions — nearly 80 percent — results from energy used to view and delete spam or search for legitimate email erroneously trapped in spam filters (false positives). At 16 percent, carbon emissions from spam filtering account for the next largest portion of spam’s total footprint.," the report says.
Now, multiply this by the estimated worldwide total of 62 trillion spam emails in 2008 and you get some astonishing numbers. While a single spam message may be like driving three feet, when multiplied by the annual volume of spam, it’s like driving around the Earth 1.6 million times, the ICF concluded.
The report also states that globally, annual spam energy use totals 33 billion kilowatt-hours (kWh), or 33 terawatt hours (TWh). That’s equivalent to the electricity used in 2.4 million homes, with the same GHG emissions as 3.1 million passenger cars using two billion U.S. gallons of gasoline.
It is not a shock that the report, sponsored by an anti-spam company,
would recommend spam filtering as a way to reduce the environmental
impact. (My company, InBoxer, also sells anti-spam filters.)
But, I think it is important. So, in honor of those who fight spam, InBoxer has made a donation to the National Arbor Day Foundation.
For this Earth Day, and in advance for Arbor day on Friday, I ask you -- and all email readers -- to join me in planting a tree to counter the impact of spam. If you like, you can do it at the Arbor Day Foundation, too. Or, list your favorite organization as a comment. (A tip of the hat to my daughter, Kira Matus, for spotting this report.)