You can organize your emails by setting up labels. Labels work like folders, but you can add more than one label to a message.
Add a label to a message:
Add a label to a message you received:
- Open Gmail.
- Open a message.
- At the top, click Label
.
- Click the box next to each label you want to add, or type a new label.
- Click Apply.
Tip: To add a label to multiple messages, select those messages in your inbox, then click Label .
Add a label to a message you're writing
- Open Gmail.
- Click Compose.
- In the bottom right corner, click More options
.
- Click Label.
- Choose a label to add.
- Open Gmail.
- Open the email you want to move, or select it in your inbox.
- Click Move to
.
- Choose the label you want to move the email to.
Create, edit & delete labels:
Create a label:
- Open Gmail.
- On the left, click More.
- Click Create new label.
- Name your label.
- Click Create.
Edit a label:
- Open Gmail.
- On the left side of the page, hover your cursor over your label's name.
- Click the Down arrow
.
- Click Edit.
- Make changes to your label.
- Click Save.
Delete a label:
- Open Gmail. You can't edit labels from the Gmail app.
- On the left side of the page, hover your cursor over your label's name.
- Click the Down arrow
.
- Click Remove label.
My labels aren't showing up
Your labels might not show up on replies or new messages, depending on whether conversation view is on or off.
- If conversation view is off: Labels will only show up on the individual messages you labeled. If someone replies to that message, the label won't show up on the reply.
- If conversation view is on: When you add a label to an entire conversation, the label will only show up on existing messages, not new ones.
<source: https://support.google.com/mail/answer/118708?co=GENIE.Platform%3DDesktop&hl=en>