A latest new features in Gmail is Suggest more recipients from the Gmail team in the Gmail Labs.
This new feature suggests you the name of the recipient (while you are composing a mail and adding recipients) from the long list of contacts whom you habitually send e-mails.
Gmail Labs adds a new feature to save time when composing messages it can now suggest contacts based on the groups you email most often. It is like a personal secretary reminding you the names of the people you are supposed to take care of.
The suggested recipients will be displayed after you enter at least two recipients. Enabling the feature works the same as all the Gmail Labs options. just head to the Labs tab under Settings and turn on the option. Now you can ensure that you dont miss someone important in the group.