Vice President, Customer Engagement (International) at Validity Inc. 1m The DMA (Data & Marketing Association) UK's Consumer Email Tracker report has long been one of my favourite pieces of research. The way subscribers engage with their marketing emails is often counterintuitive, and pausing for a few seconds to understand why is always time well spent! Particularly intriguing is that almost 4 out of 5 mailbox owners check their spam folders at least once a week.