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# AppSchema.MailEnum

Identifies enum schemas in the mail domain.

```
protocol MailEnum : AppSchema.Kind
```

## Topics

### Instance Properties

[`var category: some AppSchemaEnum`](/documentation/AppIntents/AppSchema/MailEnum/category)

An enum schema for a category parameter.

## Relationships

### Inherits From

[`Kind`](/documentation/AppIntents/AppSchema/Kind)

### Conforming Types

[`Enum`](/documentation/AppIntents/AppSchema/Enum)

---

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