You can create the subfolders of your inbox by following the steps given below:
Log in to your webmail account.
Then click on the folders tab that you can see on the left side of your screen.
Now click on create new folder option.
Enter the folder’s name and select to make it either public or private.
Then click on the create button to create a new inbox folder for you.
Select the new folder you have created and click on the option subscribe to this folder.
This will make your emails stored in this folder, and you will now receive all your emails in that folder.