First improvement will let’s say you have a listing of colleagues you believe you’ll wish to get in touch with once again sometime soon. Currently, you are able to paste that list into the Add to group menu when viewing your “colleagues ” group to fill or even expand it.
Second, Gmail added the ability to specify which one of your contact’s email addresses you want to use in a given group. So, for example, you can now use your friend’s personal address in your “Poker Buddies” group and that same friend’s work address in your “Coworkers” group.
Two improvements to contact groups - Official Gmail Blog
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