The easiest way to share a sublabel without sharing parent label is to use the cloudHQ web interface. Here is the note that explains how to do that: https://support.cloudhq.net/how-to-share-any-gmail-label/
Articles Tagged: sharing
How to share a Gmail label via web interface
cloudHQ label and email sharing does not require label sharing Chrome extension to work. Here are short instructions for how to share a Gmail label via our web interface. NOTE: Please authorize your Gmail in the “Cloud accounts” tab: Go to https://www.cloudhq.net/share_intro. Choose “Single User” to share your Gmail label: Choose the Gmail label to share and […]