What it argues
Ryan Deiss's Invisible Selling Machine is a short, practical guide to building automated email marketing sequences that move prospects through a buying journey without requiring manual follow-up at each step. Deiss is the founder of DigitalMarketer, and the book draws directly from the email automation systems his company uses and teaches. The premise is that most businesses leave revenue on the table by treating email as a broadcast channel when it can function as a structured sales process.
The framework centers on five types of email sequences, each targeting a different stage of the customer relationship: indoctrination (introducing new subscribers to the brand), engagement (re-engaging cold leads), ascension (moving existing customers to higher-value products), segmentation (learning what subscribers care about to send more relevant content), and re-engagement (recovering subscribers who have gone dark). Together these sequences constitute what Deiss calls the selling machine — a system that runs without daily manual intervention and that compounds its effects over time as the subscriber list grows.
What it gets right
- 1.
Email automation is not a broadcast channel but a sales process. The sequences you build should map to the stages of the customer relationship, not just your publishing schedule.
- 2.
The indoctrination sequence is the most important and most neglected. New subscribers are most engaged in the first 72 hours after opting in, and most companies waste that window.
- 3.
The five core sequence types — indoctrination, engagement, ascension, segmentation, and re-engagement — cover the full customer lifecycle from first contact to recovery.
What it covers
Who wrote it
Ryan Deiss is the co-founder and CEO of DigitalMarketer, one of the largest digital marketing training communities in the world. He has built and sold dozens of online businesses and is a prolific speaker on email marketing, customer acquisition, and conversion optimization. Invisible Selling Machine, published in 2015, draws directly from the email automation systems DigitalMarketer uses and teaches to tens of thousands of business owners and marketers. Deiss also co-founded Traffic and Conversion Summit, a major digital marketing conference.