Flow

An automated sequence of messages triggered by specific customer actions or events.

1 min readLast updated Apr 2026

An automated sequence of messages triggered by specific customer actions or events.

Why It Matters

Flows are the revenue engine of email marketing—automated sequences that work 24/7, triggered by real customer behaviors. Unlike campaigns (one-time sends), flows are 'set and optimize'—they continue generating revenue while you sleep. Brands with mature flows typically see 30-50% of email revenue from automations.

Practical Example

Scenario

A supplements brand has 5 core flows: Welcome (4 emails), Abandoned Cart (3 emails), Post-Purchase (4 emails), Winback (3 emails), and Browse Abandonment (2 emails).

Calculation

Each flow triggers automatically based on customer actions

Result

These 5 flows generate 42% of their total email revenue ($380K annually) while requiring only monthly optimization instead of daily campaign work.

Pro Tips

  • 1Start with the 'Big 3' flows: Welcome, Abandoned Cart, Post-Purchase—they drive 80% of flow revenue
  • 2Set appropriate time delays between flow emails (1-2 hours for cart abandonment, 1-2 days for post-purchase)
  • 3Add conditional splits based on customer value, product category, or engagement
  • 4Review flow performance monthly but resist over-optimizing—stability often beats constant tweaks

Common Mistakes to Avoid

Building too many flows before optimizing core ones—master the basics first
Setting flow emails too close together, overwhelming recipients
Not excluding recent purchasers from promotional flows

Frequently Asked Questions

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