4.2.6.2 - How to Use Exclusions & Frequency Caps (Difficulty: Beginner | Path: Launch)

Imagine a loyal customer, Sarah, who just bought a pair of shoes from your store. She is excited. But three hours later, she receives an automated email: "Forgot something? Complete your purchase!" referring to the items she literally just bought. The next morning, she gets your generic "Weekly Best Sellers" newsletter featuring the exact shoes she owns. That afternoon, she gets a "Review Request" for an order she placed a month ago. By the evening, Sarah is annoyed. She clicks "Unsubscribe." This scenario is the silent killer of e-commerce retention, and it happens not because you are malicious, but because you lack Exclusions and Frequency Caps.

In the high-stakes world of automated marketing, setting up flows is only half the battle. The other half is "Traffic Control"—ensuring that your automated messages do not crash into each other. Exclusions (or filters) are precise rules that tell a specific email flow who to skip based on behavior, such as "Exclude anyone who purchased in the last 24 hours." They act as the gatekeepers for relevance, ensuring you never ask a customer to buy something they already own or welcome a customer who has been with you for years.

Frequency Caps (often called "Smart Sending") are your global safety net. They act as a governor on your engine, setting a hard limit on how many marketing messages a single human can receive from your brand within a set time window—typically one email every 16 to 24 hours. When a customer triggers three different flows in a single day, the frequency cap steps in to prioritize the first one and suppress or delay the others, preventing the dreaded "inbox bombardment" that drives spam complaints.