Even if you choose ‘My Friends,’ anyone you’re in a Group with will be able to communicate with you in Group Chat. To see who’s in a Group before you jump in, just press and hold on the name of the group in the Chat screen. If you choose ‘My Friends,’ you won’t see Snaps sent to you by non-friends you’ll just get a notification that they added you as a friend. If you add them back, you’ll be able to see the Snap they sent you.