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# AWS::SES::MailManagerRuleSet RuleStringExpression
<a name="aws-properties-ses-mailmanagerruleset-rulestringexpression"></a>

A string expression is evaluated against strings or substrings of the email.

## Syntax
<a name="aws-properties-ses-mailmanagerruleset-rulestringexpression-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-ses-mailmanagerruleset-rulestringexpression-syntax.json"></a>

```
{
  "[Evaluate](#cfn-ses-mailmanagerruleset-rulestringexpression-evaluate)" : RuleStringToEvaluate,
  "[Operator](#cfn-ses-mailmanagerruleset-rulestringexpression-operator)" : String,
  "[Values](#cfn-ses-mailmanagerruleset-rulestringexpression-values)" : [ String, ... ]
}
```

### YAML
<a name="aws-properties-ses-mailmanagerruleset-rulestringexpression-syntax.yaml"></a>

```
  [Evaluate](#cfn-ses-mailmanagerruleset-rulestringexpression-evaluate): 
    RuleStringToEvaluate
  [Operator](#cfn-ses-mailmanagerruleset-rulestringexpression-operator): String
  [Values](#cfn-ses-mailmanagerruleset-rulestringexpression-values): 
    - String
```

## Properties
<a name="aws-properties-ses-mailmanagerruleset-rulestringexpression-properties"></a>

`Evaluate`  <a name="cfn-ses-mailmanagerruleset-rulestringexpression-evaluate"></a>
The string to evaluate in a string condition expression.  
*Required*: Yes  
*Type*: [RuleStringToEvaluate](aws-properties-ses-mailmanagerruleset-rulestringtoevaluate.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Operator`  <a name="cfn-ses-mailmanagerruleset-rulestringexpression-operator"></a>
The matching operator for a string condition expression.  
*Required*: Yes  
*Type*: String  
*Allowed values*: `EQUALS | NOT_EQUALS | STARTS_WITH | ENDS_WITH | CONTAINS`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Values`  <a name="cfn-ses-mailmanagerruleset-rulestringexpression-values"></a>
The string(s) to be evaluated in a string condition expression. For all operators, except for NOT\$1EQUALS, if multiple values are given, the values are processed as an OR. That is, if any of the values match the email's string using the given operator, the condition is deemed to match. However, for NOT\$1EQUALS, the condition is only deemed to match if none of the given strings match the email's string.  
*Required*: Yes  
*Type*: Array of String  
*Minimum*: `1 | 1`  
*Maximum*: `4096 | 10`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)