There used to be a lack of support for plugins (in general not just HS) for outlook mac, but plugins seem to be supported now, meaning HS could / should support it !
http redmondmag.com/articles/2017/03/20/outlook-for-mac-2016-add-ins.aspx
There used to be a lack of support for plugins (in general not just HS) for outlook mac, but plugins seem to be supported now, meaning HS could / should support it !
http redmondmag.com/articles/2017/03/20/outlook-for-mac-2016-add-ins.aspx