Email remains the highest-ROI channel in digital marketing — averaging $36 back for every $1 spent — but only when automation does the heavy lifting.
The five money flows
Welcome series: 3–5 emails introducing your brand, best sellers, and first-purchase incentive. Often your single highest-revenue flow.
Abandoned cart: a reminder at 1 hour, social proof at 24 hours, and an incentive at 48 hours recovers 10–15% of lost carts.
Browse abandonment: gentler than cart emails; show the viewed product plus related items.
Post-purchase: delivery updates, usage tips, then a review request and cross-sell.
Win-back: re-engage customers inactive for 60–90 days before they forget you exist.
Deliverability first
None of this matters from the spam folder. Authenticate with SPF, DKIM, and DMARC, clean your list quarterly, and keep engagement high by mailing your active segment more and your dead weight less.