Why does setting the EMM policy ‘share via…’ to false block composing an email?

Environment

Knox Workspace container Personal side of device Knox Standard SDK 4.0

Summary

Setting the Android ‘share via..’ policy to false prevents sending emails.

Cause

This policy uses the Knox Standard SDK allowShareList to block the following Android intent actions which are required for sending emails:

Intent.ACTION_SEND Intent.ACTION_SEND_MULTIPLE

Workaround

Instead of blocking apps capable of sharing with the ‘display of share via list’ policy, you can disable these apps in your EMM individually by the package name.