- Access your Yahoo! Mail.
- Go to Mail > Options.
- Select Filters under Management column.
- Click "Add".
- Enter filter name for your reference under the Filter Name.
- In the place "To/Cc header:", choose "Contains"
- Enter the email address of the group (mailing list), e.g., mygroup@googlegroups.com
- Choose the folder you want to sort all these messages to, or select [New Folder] if you want to create the folder for these messages.
- Click the "Add Filter" below.
- If the "Please enter a name for your folder." pop-ups, enter there the desirable folder name and confirm it.
Result:
[New Folder] If... To/CC contains "mygroup@googlegroups.com" Then...
Move message to [New Foler] folder