When you create a Picker in SharePoint using the new "Modern" view / look and feel, and you then generate SmartObjects of the list you only have the Pickers VALUE property which translates to DisplayName. The Email and Name is missing.
This is ONLY an issue for Legacy / Silverlight Designer
The Picker field properties Email and Name is not visible for use.
This is a product bug and only occurs when the following is true:
- The Person or Group filed is created using the Modern View in SharePoint
- You are using the Legacy / Silverlight Designer
- Switch SharePoint to Classic view before creating the Person or Group column
- Use HTML5 Designer
This will be addressed in a fixpack on top of K2 Cloud Update 5 early to mid Aug 2018.