Forwarding Outlook to G suite 

  1. On Outlook, click on Settings, choose View all Outlook settings

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2.  In Settings pane, choose Mail, a middle pane will appear then click on Forwarding 

3.  At forwarding, tick the Enable forwarding

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4. Under Forward my email to box, enter the email that you want to forward to: 

For example: your Outlook email is If you want all Outlook emails forwarding to Gmail, just type your Gmail to there

Also if you want to keep a copy of Outlook email, tick on Keep a copy of forward messages: 

After finished, Click Save to apply changes.