November 2015 in spamtraps: ESPs

ESP mail seen in spamtraps November 2015

ESP mail seen in spamtraps November 2015

The percentage of ESP sent mail vs all mail seen in the spamtraps is 0.9% this month. There has been quite a lot of botnet activity.

RATING PARTICIPANT PERCENTAGE NOTES
0 All others 49.2%  
1 SalesForce Marketing Cloud 9.7% ExactTarget
2 SendGrid 8.8%
3 MailChimp 8.5% 28% Mandrill, 72% MC proper
4 Experian 5.9%
5 MailerMAX 4.1%
6 Silverpop 3.9%
7 Constant Contact 2.8%
8 Amazon SES 2.8%
9 Responsys 2.2%
10 MySMTP 2.0%

Bubbling under: Sailthru and Digital River, at 1.8% and 1.6% respectively.

We have a new graph, too. It describes the relative badness of an ESP on the scale of amount of messages divided by amount of separate customers seen. Three players stand out by a huge margin. The scale is linear. RuleMailer (a Swedish operation) has one customer that is spewing like crazy and a handful of very small customers that aren’t a problem. MailerMAX is an unadulterated spam service provider that does not deserve to be listed along with legitimate ESPs. Green Arrow only appears because of the problem they had last month; it was history after the first week.

Amount of messages per separate customer of ESP, November 2015

Amount of messages per separate customer of ESP, November 2015

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