Q&A for How to Create a New Folder in Gmail

On desktop, when creating a new label, check the box that says, "Nest label under:" and then select the label which you want your sublabel to be under and click "Create".

On desktop, drag and drop the e-mail into the folder of your choice, then future e-mails from that sender will show up in the folder. On mobile, tap and hold the e-mail you want to move, tap the 3 dots icon in the upper right corner, tap "Move to" and then tap the folder you want it in. This method isn't always completely effective if the sender is using more than one e-mail address (like if you are receiving e-mails from multiple people at one company).

Probably because a label is like a named flag rather than an actual folder. Highlight the message(s) in question and drag them from the message list (right) onto the label in the Inbox list (left). There are also various apps and 3rd party options that do not allow this, so taking items with labels, searching/filtering, then drawing in a full browser is sometimes the only way.

Yes, you can make the folders appear different colors other than gray. Click on a folder once, then click on the symbol that looks like three vertical dots to reveal a button that says "change color." Roll your mouse over that to see a selection of colors from which to choose.

Labeling something is different from moving it to another folder. Labeling emails will not remove them from your inbox.

You can use a keyboard shortcut to do this. Press the ALT and the F4 keys at the same time.

To open a Gmail account, visit the Gmail website and click the "Create account" button or link. Then, follow the on-screen instructions to set up your new account.

Unfortunately yes. The main reason to create labels is to clear your inbox.