Can not drag a Contacts card into a group mailing list
The Apple Contacts application provided with macOS has plagued Apple users long enough. The primary issue: "Can not drag a Contacts card into a group mailing list" has been asked or posted here multiple times. It now seems that Apple, as a matter of policy, does not want their macOS users to have a good experience with their "Contacts" app on macOS. Why? I don't know. But over couple years, I have seen numerous question/issue postings about not being able to drag contact cards into "groups". Apple Developers: I know that from a policy PoV that Apple does not like their customers to have good or robust "organizational" tools. It is evident, Apple has always screwed up folder-hiearchy browsing, where folder's are created at more than 3 levels deep. And now, "Groups" are really the same concept, allowing macOS users to place their contacts in an "organized way" by using "Groups" ...which is an organizational method similar to folders. But by and far...IT IS BROKEN...AND HAS REMAINED BROKEN...FOR A LONG TIME.
Apple Decision Makers: Please leave this posting placed here. Bring your developers and other customer care responsible(s) to this posting. Use it as coffee to put under their noses and wake them up. "Contacts" app NEEDS SOME SERIOUS "Tender Loving Care" (TLC).
MacBook Pro 13″, OS X 10.11