You'll also likely find the following knowledgebase articles to be helpful, too:
Getting started with WSP (Windows) - https://www.smallbusiness.host/clients/knowledgebase/44/Getting-started-with-WSP-Windows.html
How do I log in to my Windows Control Panel (WSP) - https://www.smallbusiness.host/clients/knowledgebase/31/How-do-I-log-in-to-my-Windows-Control-Panel-WSP.html
Please also note that the data from these email accounts will be deleted along with the account. If you want to keep the data, it's vital that you back it up (e.g; add the accounts into an application such as Microsoft Outlook and go to File -> Import/Export and export the emails).
To delete the accounts, all you need to do is log into Windows Control Panel.
Then, look for the POP/IMAP Email section. Then click on Accounts
Then, click on the email account you wish to delete from the list.
Next, click the Delete button at the bottom of the page.
Repeat the above steps for any other email accounts.
