Thanks for posting your question. I'm sorry you are having issues with deleting mail from your account with your iPhone.
If you check your Web Hosting Hub email using your iphone, you can follow these steps to fix this issue:
If you currently do not have a Web Hosting Hub hosting account, you may find this page at apple.com heplful in troubleshooting this iPhone error.
|Email:||support@WebHostingHub.com||Ticket:||Submit a Support Ticket|
|Chat:||Click To Chat Now|