Make sure that your Internet connection is fast. If you have any issues, try connecting your device to a mobile hotspot or network. Reboot the iCloud application on your device and check whether you are able to receive emails. If your email account is offline, you won’t be able to send or receive emails. If you find that your account name is dimmed, your account may be offline. Turn it to online and check whether you receive mails on iCloud. Now, verify whether the iCloud mail not receiving mails issue is resolved. If the issue persists, navigate to the Mailbox and select the Take All Accounts Online Select the Mail menu and go to Preferences . Go to the Accounts tab and choose your iCloud account from the displayed list. Click on the Advanced tab and verify your settings. Make sure that the port number is set to 993. Now, select Use SSL . Select the Authentication type as Password. If you are signing in to your iCloud mail account from an iPad, iPod touch, or...