# IngressStringExpression
<a name="API_IngressStringExpression"></a>

The structure for a string based condition matching on the incoming mail.

## Contents
<a name="API_IngressStringExpression_Contents"></a>

 ** Evaluate **   <a name="sesmailmanager-Type-IngressStringExpression-Evaluate"></a>
The left hand side argument of a string condition expression.  
Type: [IngressStringToEvaluate](API_IngressStringToEvaluate.md) object  
 **Note: **This object is a Union. Only one member of this object can be specified or returned.  
Required: Yes

 ** Operator **   <a name="sesmailmanager-Type-IngressStringExpression-Operator"></a>
The matching operator for a string condition expression.  
Type: String  
Valid Values: `EQUALS | NOT_EQUALS | STARTS_WITH | ENDS_WITH | CONTAINS`   
Required: Yes

 ** Values **   <a name="sesmailmanager-Type-IngressStringExpression-Values"></a>
The right hand side argument of a string condition expression.  
Type: Array of strings  
Required: Yes

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\+\+](https://docs.aws.amazon.com/goto/SdkForCpp/mailmanager-2023-10-17/IngressStringExpression) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/mailmanager-2023-10-17/IngressStringExpression) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/mailmanager-2023-10-17/IngressStringExpression)