OPPO R9s

Android 6.0.1

I can't send and receive email messages on my OPPO R9s Android 6.0.1

Cause 1 of 4: The incoming or outgoing mail server isn't available

Depending on which mobile network or Wi-Fi network you're connected to, your provider's email servers may be unavailable.

Solution: Contact your email provider for the correct settings for the incoming or outgoing server.

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