You can easily create e-mail accounts from your hosting account's Control Panel (cPanel). Here is what you need to do:
Step 1 Log into your cPanel
Step 2 Once at the main page, click on the Email Accounts icon.

Step 3 In the fields provided, type the name of the account, the password and the disk space you would like to assign to the mailbox.

Step 4 Click on the Create Account button to create the mailbox.
You will be taken to a page which asks you for confirmation. Click on Yes to create the mailbox.
How to remove mail accounts
There is no problem to remove any added email accounts.
To delete a mail account, simply click on the Delete button next to it.

You will be taken to a page which asks you for confirmation. Click on Yes to delete the account.