This won't work for all businesses (duh)—at least not shipping a sample product—but would you rather compete for space in the inbox or the mailbox?

The note says:

Hello! I see you started an order but didn't get around to completing it. Since it costs us $50 to acquire a new customer, I thought it made more sense to just send you a free product to try. Hope you don't mind. I'm sending one of our two flavors of Hard Ketones. Real Buzz, No Booze. Most people need 2 on an empty stomach to feel it, but thought we would start with tasting it. Hope you like it! Use code FrankFreebie for free shipping, I hope this helps make the decision easier! Frank LLosa CEO KetoneAid and Hard Ketones

I don't know what tool they use to make this possible. (Maybe some clever rule writing with this app?)

When asked whether this tactic worked, KetoneAid's founder Frank said:

“The cost of posting a can is $10. People get hooked and buy subscriptions. And the lifetime value of a subscriber is $3,000.”

Post Syllabus:

DemandCurve Growth Newsletter #113: Go overboard with cart abandonment