| Subtotal | £0.00 |
|---|---|
| Total | £0.00 GBP |
Please note: Results may vary and are not guaranteed.
Due to the digital nature of this product, we do not offer refunds.



You’re doing everything the courses told you to do. It isn’t working.
You personalise your subject lines. You follow the “best practice” templates. You send your welcome series once and move on to the next campaign, because that’s what the LinkedIn threads and the agency decks say to do.
And yet open rates keep sliding. Unsubscribes creep up. The newsletter that took three hours to design gets outperformed, quietly and repeatedly, by automations nobody has touched in years.
Here’s the uncomfortable possibility nobody in your feed wants to say out loud: some of the “rules” you’ve built your entire email strategy around were tested once, years ago, went viral as advice, and were never checked again. Meanwhile, the industry kept repeating them like gospel.
This booklet checks them. Properly. Against peer-reviewed field experiments, a 32-million-send benchmark study spanning 38 sectors, and a live production system built by one of the world’s largest online retailers. Not opinion. Not a vendor case study dressed up as proof. Controlled trials, control groups, statistical significance.
Some of what you believe about email will survive contact with the data. A surprising amount won’t.

This isn’t theory. Every recommendation is backed by academic research, field studies, and real-world case studies. You’ll get the full academic citations, the industry benchmarks, and the practical frameworks you need to implement this tomorrow.
Copyright © 2026