With Android Enterprise, it is generally possible to distribute the app in a container. iOS does not have a standardized type of container supported by the operating system.
However, Threema Work is not available as a wrapped container solution (e.g., for MobileIron AppConnect or Citrix MDX Toolkit). Wrapping would require substantial adjustments to the Threema Work app that would lead to considerable limitations and incompatibilities. Since our requirements in regard to ease of use and reliability could not be met, wrapping is not supported.
If your company uses MobileIron AppConnect, please refer to this article.