How to View and Manage Labels in Gmail
Once you've created labels, and applied those labels to email, you can view a label to see all of its emails at once.
Labels that you’ve created appear in the list in the left pane.
All of the emails with that label applied are displayed.
You can also control how the labels you've set up appear in the left pane.
You can choose to always show a label, hide it, or only show a label if there are unread email messages with that label applied.
You can also change the color of a particular label when it appears on tagged email.
That label’s tags will now appear in the selected color.
In addition to showing or hiding one label at a time, you can manage them all at once in your Gmail settings.
The Settings page opens directly to the Labels tab. Here you can see all of the built-in system labels, the default mail categories, and the custom labels you've created.
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