Usually Apple claims to make most secured and unhackable devices. But still iCloud is creating is of not receiving the emails on iPhone or any other devices. And I have some solutions to tackle this situation or problem.

Some always remember or common things to do in such cases:

• Ensure you have Enabled Mail in iCloud
• Turn on Mail for Third-Party Email Service Providers
• Check iCloud Email Fetch & Notification Settings
• Enable Mail to use Cellular Data
• Check iCloud Server Status
• Try Resetting Network Settings
• Free up iCloud Storage
• Sign out of iCloud and Sign In Again

Troubleshooting efforts on iCloud.com:

• Use the Latest Browser
• Clear Your Browser’s Cache
• Turn off Browser Extensions

Resource URL: https://emailspedia.com/icloud-is-not-receiving-emails-on-iphone/