In the heyday of offline email clients (Outlook, The Bat, Mozilla Thunderbird), many customers are used to using folders to separate different emails by criteria (work / home / shopping, etc.).
Gmail does not have the ability to create folders per se. Instead, Gmail suggests using labels. In fact, a label is a group to which you can add an email. Unlike a folder, each email can have multiple labels.
Each Gmail message has several default labels, such as Inbox, Spam, Trash, and Drafts, which you can't delete or edit.
1. Create a new label
Create new label button at the bottom of the list.
Nest label under: selector only if you want to choose an existing parent label for your
new label. For example, this can be useful if you're going to sort your mails by country (root label) and
then by city (sub-label).
2. How to mark the email with the label.
3. Editing the label.
In many cases, it is more convenient to create a filter, by the condition of which the label will be automatically substituted for the emails, in order not to add a label to each mail manually. We will describe how to use filters in the next articles.