More flexible than a folder
Unlike a traditional folder, a single email in Gmail can carry several labels at once, which makes it much more flexible for organizing messages that belong to more than one category.
If your inbox has piled up
If labeling alone is not enough to get on top of a crowded inbox, it is worth also learning how to select and delete large numbers of old emails at once to clear out the backlog.
Frequently Asked Questions
Does applying a label remove the email from my inbox?
No. A label is just a tag for organizing messages, so the email stays in your inbox unless you separately archive it.
Can I change the color of a label?
Yes. Open the options menu next to a label to assign it a color, which makes it easier to tell labels apart at a glance by importance or type.