May 2017 in Spamtraps: ESPs

ESP mail seen in spamtraps, May 2017

ESP mail seen in spamtraps, May 2017

The percentage of ESP sent mail vs all mail seen in the spamtraps is 2.4%, up 50% from last month, but it is mostly explained by the amount of all mail being down nearly 30% from last month.

The Nordic (Finnish, Swedish, Danish, Norwegian) porn/dating spammers went to the Danish ESP MySMTP in April and stayed until the beginning of May, so they made #3 this month as I predicted. They went to Dyn when MySMTP terminated them, causing over 70% of Dyn’s contribution this month. Dyn termed them quickly, at which point they went to SendGrid and got out maybe a handful of mails before SendGrid’s automatic scripts terminated them. They were also on Mailgun at the same time as on MySMTP.

Bubbling under this month: Dyn (3%), AWeber (2.5%), IBM Marketing Cloud (2.2%). AWeber is only down in the charts because everybody else is up; the same problems stay month after month.

0 All others 39.9%
1 SendGrid 9.6% (3.7%)
2 SalesForce Marketing Cloud 8.5% ExactTarget Kohls (2.5%)
3 MySMTP 8.1% Nordic porn dating spammers (88%)
4 MailChimp 6.3% (5.7% Mandrill) (1.1%)
5 Experian 5.5% Walgreens (7.2%)
6 Constant Contact 4.6% Advisor Perspectives (48%)
7 Mailgun 4.3% Nordic porn dating spammers (66%)
8 Digital Metrics 4.1% Everything they send is the same garbage (100%)
9 Oracle Marketing Cloud 3.2% Responsys, Eloqua and RightNow Nordstrom (11%)
10 Amazon SES 3.1% (24%)

Here’s the “relative badness” graph.

Average amount of messages per separate customer of ESP, May 2017

Average amount of messages per separate customer of ESP, May 2017

Finally, the “top spamming customers” table.

1,, MySMTP Over 88% 7.2%
2 Mailgun 66% 2.9%
3 Advisor Perspectives Constant Contact 48% 2.2%
4 Dyn 70% 2.1%
5 Dick’s Sporting Goods, Inc. Epsilon 38% 0.7%

One Response to May 2017 in Spamtraps: ESPs

  1. Atro, thanks for showing us how some bad actors hop from one ESP to another. Should ESPs be strengthening their collaborative signup vetting, like what E-Hawk provides? I wonder what kind of E-Hawk scores these porn/dating spammers got when they tried to sign up? Did you hear whether any ESPs rejected them before they signed up or sent any mail whatsoever?

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