New release v4.22.0

2025-09-05, Markus Gruber

🔗More Outlook add-in customization

The v4.22.0 release brings major changes and customization features to the Outlook add-in:

Custom rules can now set a completely customized signature body using the new 'customRulesResultSignatureBody' property, available for Exchange Online.
Added 'graphAccessToken' and 'graphApiEndpoint' properties to custom rules, allowing direct querying of the Graph API for advanced logic (e.g., user properties, group membership).
The text of the post-signature notification can be set using the new 'customRulesResultNotification' variable.
Custom rules can access the current and original notification texts via 'customRulesProperties.notificationCurrent' and 'customRulesProperties.notificationOriginal'.
New boolean properties are available for custom rules to check email context:
- 'customRulesProperties.itemIsReply'
- 'customRulesProperties.itemIsForward'
- 'customRulesProperties.itemIsHtml'
- 'customRulesProperties.itemIsText'
Added the ability to define a custom ID for the add-in, enabling multiple independent configurations in the same environment.

Added a workaround for the issue in Outlook Web and New Outlook for Windows that resulted in multiple signatures being added to appointments.
The add-in is now forced to use the Graph API for Exchange Online mailboxes to prepare for the deprecation of EWS.
Changed the custom rules output variable from 'customRulesPropertiesResult' to the clearer 'customRulesResultSignatureName'.
Fixed an issue to ensure custom rules properties 'itemIsNew' and 'itemIsReplyForward' report correctly across platforms.
Fixed an issue to prevent the add-in from re-using 'customRulesPropertiesResult' between manual and automatic runs.
Added comments to the 'manifest.xml' to clarify mailbox requirements and permissions.

For a comprehensive list of all changes, dependencies, and fixes, please consult the official CHANGELOG.

new release