An error occurred while saving the commentIlpo Juvander commented
Seems that this came with 15.28, but is pretty much useless implementation.
I can only attach a link from Sharepoint.
And even on the link there is default that recipient can edit.
So when sending mail outside of my organisation, I still need to download file manually from Sharepoint and then attach it from local file system as there is no option to attach it as a copy from Sharepoint - only as a link :(