Dispatch N°02 · Investigation
A Signifyd employee woke one Sunday to several hundred unread emails. Buried among them was a $1,300 Apple Store receipt she had not authorised. Every one of those messages came from a signup form on somebody's website. Researchers who analysed 24 such campaigns found the traffic almost impossible to filter, because it is genuine mail sent by real shops that did nothing wrong except leave a form open.
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Subscription bombing
Deliverability
15 min
Dispatch N°03 · Field guide
A spam filter's dial has nine positions, of which roughly four produce distinct results, and one blocks every submission the store will ever receive. What the number underneath represents, why a new store's scores cannot be trusted, and what is traded away at each end. With a sorting rack you can drag, our behavioural signal weights published in full, and the one question to put to any vendor ahead of the pricing question.
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Interactive
Thresholds
Honeypots
14 min