We’re far too reliant on email for communications to completely stop using it, and that’s a good thing. The carbon footprint of email is nothing compared to the energy required to transport physical mail–not to mention the paper wasted on mailed letters. But if we can significantly cut our carbon footprints by switching to spam-filtering email services or installing free software, why not?
|Emissions for spam (kg CO2-e / yr)|
|Spammers Harvesting addresses||<1%|
|Spammers Creating Spam Campaigns||<1%|
|Zombies/bots sending spam||<1%|
|Non-bots sending spam||<1%|
|Internet (excluding mail servers)
|Incoming mail servers processing spam||1%|
|Users searching for false positives||27%|
|Users viewing/deleting spam||52%|
Table courtesy of Cody Taylor, ICF International.