Complex audience rules complex-rules
Bulk value limits bulk-value-limits
When adding a large number of values to a single audience rule — for example, a long list of email addresses — you may encounter an error indicating that the rule has exceeded the maximum allowed size.
Each audience rule has a size limit per attribute. For email addresses, the limit depends on the total character length of the entries rather than a fixed count. As a general guideline, use approximately 100–115 email addresses per rule.
If you need to target more entries than this limit allows, split the list into smaller chunks and apply them as separate OR-connected conditions using nested logic.
Using nested logic for complex rules nested-logic
Nested logic lets you combine multiple audience conditions with precise AND/OR control. To enable it:
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Add the audience conditions you need.
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Enable Nested Logic in the audience rules section.
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Each condition is assigned a number. Enter a logical expression that references these numbers, for example:
1 and (2 or 3)(1 and 2) or 3(1 and 2) or (3 and 4)
This is the same mechanism used for percentage rules in combination with other criteria. See Add percentage rules in audience criteria for worked examples.