You can't rename the default folders, such as the Inbox folder. Note: Due to possible mail delivery and syncing issues, do not create subfolders of the 'Inbox.' New Folder Use this to create a new sub-folder in the folder you right-clicked.Most of what you can do with a folder will be found in the right-click menu.
You may see other folders that have been created by your administrator. Learn about junk email and phishing has more information about your Junk Email folder. You can come back to the message later to continue editing it, and then send it. Your account starts with these default folders: