Gmail – Creating “groups” in Gmail

Contacts are just addresses and groups are just collections of contacts. Unless you write a plugin to read user defined fields from the contacts api, I don't believe that you would be able to selectively designation a contact as 'to' or 'cc'.

Otherwise, I would suggest creating two subgroups: one for the 'to's and another for the 'cc's. Remember that contacts can be members of multiple groups. So all of them can still be members of a 'Family' group.

There isn't a way to auto-prefix subjects based on emailing a contact group. Note: This is different from Google Groups.

When you decide to email all/some people in a group, GMail will individually add each of those people to the To: line of the email.

Since I was on the kick, I tried setting up an email group (group@my-domain.com) in my Google Apps for Business account. And while you can add members/owners to the list from there, you cannot customize the subject line for Apps for business accounts either.

However, using the Google Email groups from within apps may solve your issue. You can set it up so that people are only replying to that group email (group_1@your-domain.com). This will make your replying easier and also make filtering a snap as well as not forgetting to include someone.