How to Receive iCloud Emails to Your iPhone Automatically

Open your iPhone's Settings. It's an app with a gray gear icon on one of your home screens. It may be in a folder called “Utilities.”

Scroll down and tap Mail. It's in the fifth group of settings.

Tap Accounts.

Tap Fetch New Data.

Slide the “Push” switch to the On position.

Tap iCloud.

Select Push. Now when someone sends an email to your iCloud email address, it will be “pushed” to your phone as soon as it's received by the server. If you organize your mail with iCloud filters, you can choose not to push a certain mailbox by deselecting it under “Pushed Mailboxes.” Your iPhone can only receive pushed data when it's connected to the Internet.