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Explainer 19 Aug 2026
How is customer retention rate calculated?
Klaviyo's own example gives 64%, dividing repeat buyers by one-time buyers. Divide the same repeat buyers by all 92,000 customers and it is 39%. Seven formulas answer the question.
12 min read
· Updated
Explainer 14 Aug 2026
What does AI actually do in email marketing?
AI gets applied at six points in an email programme, and the vendor documentation is precise about the mechanical ones and silent about the decisions. What the help pages promise, what they refuse, and where the automation stops.
14 min read
· Updated