Step 1. Install cPanel from App Store.
Step 2. Tap cPanel.
Step 3. Tap the plus sign (+) to add a service.
Step 4. Enter the following under “SERVER INFORMATION”:
Step 5. Tap Service.
Step 6. From the Service menu, tap Webmail and tap Settings to continue with the setup.
Step 7. Enter the following information under “AUTHENTICATION”:
Step 8. Tap “CONNECT”.
You are now able to access emails using Webmail on your iPhone.