How to automatically sorting your mail from a mailing list with Labels in Gmail

1. Access your Gmail.
2. Search for the link Create a filter, and click it (it's in small leters, next to the "Search the Web" button.
3. In the "To:" place, enter the email address of the group (mailing list), e.g., mygroup@googlegroups.com
4. Click "Next Step >>"
5. Select "Skip the Inbox"
6. Select "Apply the label" and choose the label. (create one by "New label..." if you want a new one)
7. Click "Create Filter"

You should see, The label "cans" was created.

Now, the email of that group won't disturb your normal communications.

From HowTo Wiki, a Wikia wiki.