SenderBase

Who is sending most emails in the world? Who are they? Where are they? Are they in any blacklists? All this data is collected and searchable on SenderBase. I was not aware that comcast.net (which was unknown to me) sends out more emails than yahoo.com (332m vs. 309m estimated daily volume). And that aol.com sends less (87m) than wanadoo.fr (92m). My be that the estimate is wrong and for instance aol is not submitting data so that internal (aol to aol) emails remain unaccounted for. But still, huge figures.