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Rule element

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Specifies the activation rules that should be evaluated for this contextual mail add-in.

Add-in type: Mail (contextual)

Important

Entity-based contextual Outlook add-ins are now retired. As an alternative solution, implement regular expression rules in your contextual add-in. For guidance on how to implement these rules, see Contextual Outlook add-ins.

Contained in

Attributes

Attribute Required Description
xsi:type Yes The type of rule being defined.

The type of rule can be one of the following:

ItemIs rule

Defines a rule that evaluates to true if the selected item in read or compose form is of the specified type. You can specify more than one ItemIs rule in the manifest.

Attributes

Attribute Required Description
ItemType Yes Specifies the item type to match. Can be Message or Appointment. Message item type includes email, meeting requests, meeting responses, and meeting cancellations.
FormType No (within ExtensionPoint), Yes (within OfficeApp) Specifies whether the app should appear in read or edit form for the item. Can be one of the following: Read, Edit, ReadOrEdit. If specified on a Rule within an ExtensionPoint, this value MUST be Read.
ItemClass No Specifies the custom message class to match. For more information, see Item Types and Message Classes.
IncludeSubClasses No Specifies whether the rule should evaluate to true if the item is of a subclass of the specified message class; the default is false.

ItemType

The following table describes the Appointment and Message item types you can specify in the ItemType attribute.

Value Description
Appointment Specifies an item in an Outlook calendar. This includes a meeting item that has been responded to and has an organizer and attendees, or an appointment that doesn't have an organizer or attendee and is simply an item on the calendar. This corresponds to the IPM.Appointment message class in Outlook.
Message Specifies one of the following items received in typically the Inbox.

  • An email message. This corresponds to the IPM.Note message class in Outlook.

  • A meeting request, response, or cancellation. This corresponds to the following message classes in Outlook.

    IPM.Schedule.Meeting.Request

    IPM.Schedule.Meeting.Neg

    IPM.Schedule.Meeting.Pos

    IPM.Schedule.Meeting.Tent

    IPM.Schedule.Meeting.Canceled

Example

<Rule xsi:type="ItemIs" ItemType= "Message" />

ItemHasAttachment rule

Defines a rule that evaluates to true if the item in read form contains an attachment.

Example

<Rule xsi:type="ItemHasAttachment" />

ItemHasKnownEntity rule (deprecated)

Warning

The <ItemHasKnownEntity> element is now deprecated. Specify regular expression rules using the ItemHasRegularExpressionMatch element instead.

Defines a rule that evaluates to true if the item contains text of the specified entity type in its subject or body.

Attributes

Attribute Required Description
EntityType Yes Specifies the type of entity that must be found for the rule to evaluate to true. Can be one of the following: MeetingSuggestion, TaskSuggestion, Address, Url, PhoneNumber, EmailAddress, or Contact.
RegExFilter No Specifies a regular expression to run against this entity for activation.
FilterName No Specifies the name of the regular expression filter, so that it is subsequently possible to refer to it in your add-in's code.
IgnoreCase No Specifies whether to ignore case when matching the regular expression specified by the RegExFilter attribute.
Highlight No Note: this only applies to <Rule> elements within <ExtensionPoint> elements. Specifies how the client should highlight matching entities. Can be one of the following: all or none. If not specified, the default value is all.

Example

<Rule xsi:type="ItemHasKnownEntity" EntityType="EmailAddress" />

ItemHasRegularExpressionMatch rule

Defines a rule that evaluates to true if a match for the specified regular expression can be found in the specified property of the item in read form.

To learn how to implement the ItemHasRegularExpressionMatch rule, see Contextual Outlook add-ins.

Attributes

Attribute Required Description
RegExName Yes Specifies the name of the regular expression, so that you can refer to the expression in the code for your add-in.
RegExValue Yes Specifies the regular expression that will be evaluated to determine whether the mail add-in should be shown.
PropertyName Yes Specifies the name of the property that the regular expression will be evaluated against. Can be one of the following: Subject, BodyAsPlaintext, BodyAsHTML, or SenderSMTPAddress.

If you specify BodyAsHTML, Outlook only applies the regular expression if the item body is HTML. Otherwise, Outlook returns no matches for that regular expression.

If you specify BodyAsPlaintext, Outlook always applies the regular expression on the item body.

Important: If you need to specify the Highlight attribute for the <Rule> element, you must set the PropertyName attribute to BodyAsPlaintext.
IgnoreCase No Specifies whether to ignore case when matching the regular expression specified by the RegExName attribute.
Highlight No Specifies how the client should highlight matching text. This attribute can only be applied to <Rule> elements within <ExtensionPoint> elements. Can be one of the following: all or none. If not specified, the default value is all.

Important: To specify the Highlight attribute in the <Rule> element, you must set the PropertyName attribute to BodyAsPlaintext.

Example

<Rule xsi:type="ItemHasRegularExpressionMatch" RegExName="SupportArticleNumber" RegExValue="(\W|^)kb\d{6}(\W|$)" PropertyName="BodyAsPlaintext" IgnoreCase="true" Highlight="all" />

RuleCollection

Defines a collection of rules and the logical operator to use when evaluating them.

Attributes

Attribute Required Description
Mode Yes Specifies the logical operator to use when evaluating this rule collection. Can be either: And or Or.

Example

<ExtensionPoint xsi:type="DetectedEntity">
  <Label resid="Context.Label"/>
  <SourceLocation resid="DetectedEntity.URL" />
  <Rule xsi:type="RuleCollection" Mode="And">
    <Rule xsi:type="ItemIs" ItemType="Message"/>
    <Rule xsi:type="ItemHasRegularExpressionMatch" RegExName="videoURL" RegExValue="http://www\.youtube\.com/watch\?v=[a-zA-Z0-9_-]{11}" PropertyName="BodyAsPlaintext"/>
  </Rule>
</ExtensionPoint>

See also