You can create a label for anything inside of Gmail. Once you create a label, you also need to create a filter. Filters and labels work together. The filter will automatically add a label to emails.

How to Create Sub Labels for Google Bookmarks. Creating bookmarks in a Web browser is a great convenience, but your ability to access those bookmarks is limited to when you are using that ...

Since we're in Gmail, those buckets aren't folders, they're labels. If you're using labels other than Follow Up and Hold, you can sort Follow Up and Hold at the top of your label list. I do this ...