>> My question is, "What Mailchimp spam problem?" Where's data? All I see >> is useless bombastic complaining that belongs on NANAE or SPAM-L, not >> here. > > Ok, there is a point here which I did not consider enough. > > I did not collect any numbers about emails send by mailchimp to our > email platform.
According to dnswl.org <http://dnswl.org/> magnitude data*, Mailchimp is one of the large sources of email, just behind Microsoft/Google, and ahead of Amazon, Sendgrid, Facebook, ExactTarget, Yahoo, LinkedIn and Twitter. Of those, ExactTarget and Facebook have the highest „spamminess“ score (an internal number considering volume of email and volume of complaints/RBL hits etc); Mailchimp is relatively „clean“. On the other hand, we see *many* spamtrap hits from all email marketing senders. And I mean *many*. Spamtraps that returned 5xx for years. Spamtraps that never „engaged“ or „opened“ or „inboxed“. Spamtraps that never „subscribed“ (ey, some are even Message-Ids scraped from Usenet!). And *a lot* of what email marketers send is silently disposed of in spamfilters (dropped, quarantined, whatever). I looked deeper into our data at dnswl.org <http://dnswl.org/> over the past few weeks. More and more I get the impression that hardly any "email marketers" have a "clean list", or even care about it. I believe there are some dirty facts around the whole „email marketing“ thing which people with better data than me should uncover. — Matthias * We do not directly observe SMTP traffic, but only the DNS traffic. Due to caching etc our data is slightly distorted and over-estimates small senders. However the magnitude data still shows the relative size of senders.
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