iPhone 6s does not sync with iCloud mail

Hi obgyndoc,

Welcome to Apple Support Communities. I understand that you're having trouble with iCloud Mail on your iPhone 6s. I know how important it is to have access to your email account; I'd like to help. I'd recommend using the steps below to troubleshoot this behavior:

"If you need help sending or receiving mail on your iPhone, iPad, or iPod touch

1. 1. Make sure that you're connected to the Internet. Try to open apple.com in Safari on your iPhone, iPad, or iPod touch.
   2. Go to iCloud.com on a Mac or PC to see if you can receive email for your iCloud email.
   3. Tap Settings > [your name] > iCloud and turn on Mail on your iPhone, iPad, or iPod touch. If you're using iOS 10.2 or earlier, go to Settings > iCloud.
   4. Make sure that new data is pushed to your device automatically. Tap Settings > Passwords & Accounts > Fetch New Data, and turn on Push. Then send an email to your account to see if Push is working.

• • • On your device with iOS 10, tap Settings > Mail > Accounts > Fetch New Data, and turn on Push.
    • On your device with iOS 9 and earlier, tap Settings > Mail, Contacts, and Calendars > Fetch New Data, and turn on Push.

1. 1. Go back to Fetch New Data. Then Tap your iCloud account and turn on Push. If you have multiple iCloud Mail accounts, you can use Push with one account at a time. Make sure that Push is turned on for your primary iCloud Mail account.
   2. Turn your device off and back on.

If you still can't send or receive mail, turn off each of the settings in steps 3, 4, and 5 above, then turn them back on.

Get more help

If you still need help, contact iCloud Support."

Get help using iCloud Mail

Best Regards.