Siga estes tutoriais:
- Como adicionar e configurar o Gmail no aplicativo de email do Windows 8
- Como adicionar o Gmail no aplicativo de email do Windows 8
- Vídeo: adicione uma conta do Gmail no aplicativo de email do Windows 8
- CNET How to Como adicionar Gmailaccounts no Windows 8 Mail
- Não é possível adicionar a conta do Gmail no aplicativo de email do Windows 8
When you add the account are you checking the sync contacts and calendar setting in the add account experience? If not can you try with the option selected ? With the sync calendar and contacts settings unchecked mail tries to add the account as an imap account, if that's how you would like to sync your Google account you'll need to check if imap is enabled for your account on the email account settings page on Google.